NEWSLETTER 01/2024 21.01.2024

Please acknowledge use of the database www.shark-references.com in your publications, and cite: 

Pollerspöck, J. & Straube, N. 2024, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2024
Pollerspöck, J. & Unger, E. (2023) „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Hayfische (Selachoidei A. Günther) (Probst 1878). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 179, 197–255

Example tables:

Open Access
Jürgen Pollerspöck, Danielle Cares, David A. Ebert, Katherine A. Kelley, Robert Pockalny, Rebecca S. Robinson, Daniel Wagner & Nicolas Straube (2023) First in situ documentation of a fossil tooth of the megatooth shark Otodus (Megaselachus) megalodon from the deep sea in the Pacific Ocean, Historical Biology, DOI: 10.1080/08912963.2023.2291771

Download via Research Gate or journal webpage

Pacific records of fossil shark teeth [data]

Records of Otodus megalodon and Cetacean ear bones [data]


Some changes in the web-page organisation:

We added a new ‚TOOLS‘ menu item- all available tools will be available here from now, for example a guide how to download species specific literature lists. Please check it out!

Reorganisation of the species lists!

Several extant taxa are also documented in the fossil record. We are in the process of creating species lists of extant taxa, which include such records. Extant taxa occurring in the fossil record are now marked with the suffix "-f" (e.g., Dalatias sp. -> Dalatias sp-f, Dalatias licha -> Dalatias licha-f) to indicate that the reference refers to a fossil record. The fossil records of the extant taxa are listed in the "Extinct - All" and "Extinct - Valid" lists. We will keep you informed about the further progress on facebook and in the next newsletters, however, a preliminary list of taxa that have been marked with ‚-f’ can be found here.

Example list "Extinct - valid species"


We started to change our old (and unique!) citation style to adapt to the APA citation style (for information please see: https://www.mendeley.com/guides/apa-citation-guide) to make the usage of references listed in shark references easier and more compatible with a widely accepted reference style adopted by several international scientific journals. The transition is ongoing, so far 26570 (last month: 26476) references are changed.


Since we were asked several times, if we could help distributing chondrichthyan-related job opportunities, we would like to try this out as a new category in the newsletter besides postings on our Facebook page. This category definitely depends on the community sharing job openings, so please do not hesitate and send us vacancies or similar.
Right now, we have four interesting job openings. We will keep it simple and just crosslink:


Would you like to become a shark-reference partner? Please contact us per E-mail!

Partner in Google-Maps


Upcoming Meetings:

95th PalGes in Warsaw 2024 - Joint Meeting of the Polish Paleobiologists and the annual meeting of the Paläontologische Gesellschaft (Palges)

More than extinct species: the importance of fossils for ecology, evolution and conservation across borders



Most popular posts at our Shark References Facebook page:

If you would like us to post information about your newly published work, please send us a picture and the paper as a pdf to nicolas.straube@shark-references.com or juergen.pollerspoeck@shark-references.com.

Nr. 1 (182 Likes/Emojis, 105 Shares):

This study demonstrates partial fin regeneration of a silky shark (Carcharhinus falciformis) almost one year after a traumatic injury that resulted in a 20.8% loss of the first dorsal fin. The shark was photographed 332 days after the recorded injury with a newly shaped dorsal fin that had healed to 87% of the original size. Photographs provided by divers allowed for accurate measurements of fin growth, confirming an approximate 10.7% increase in fin area, indicative of tissue regeneration.
open access!
Black, C. 2023 Resilience in the Depths: First Example of Fin Regeneration in a Silky Shark (Carcharhinus falciformis) following Traumatic Injury. Journal of Marine Sciences, Article 6639805

Nr. 2 (99 Likes/Emojis, 51 Shares):

Many thanks to Rima Jabado for sharing:
the latest IUCN SSG shark news is out.
You can directly access and download both low and high resolution versions at https://www.iucnssg.org/shark-news.html#sharknews009 or view it on Issuu.com

Nr. 3 (48 Likes/Emojis, 8 Shares):

open access
Ebersole, J.A. & Cicimurri, D.J. & Ebersole, S.M. 2024 Additions to the Pliocene fish assemblage (Chondrichthyes; Osteichthyes) from Dauphin Island, Alabama, USA. Paleoichthys, 8, 1–20
Several thousand fossils recovered from dredge deposits occurring on Dauphin Island, Alabama, USA include teeth, otoliths, spines and other skeletal remains of chondrichthyan and osteichthyan fishes. Fiftytwo unequivocal fish taxa have been identified from these remains, and the assemblage represents the most diverse Pliocene fish fauna recovered from the northern Gulf Coastal Plain of the USA. The species composition of the paleofauna indicates that the fishes inhabited a subtropical estuarine environment with nearby marine influence. This paleoenvironmental scenario is similar to that of present-day Mobile Bay, indicating that the Early Pliocene shoreline of Alabama was located several kilometers south of its present location. Additionally, the species occurring in the Gulf of Mexico at that time, with few exceptions, still inhabit these waters.


New Images

Many thanks to the following people for providing images:

Frederik H. Mollen (Elasmobranch Research Belgium) for images of Galeus melastomus Rafinesque, 1810

Fabrice Moreau for some images of fossil shark teeth, eg. Dalatias sp.-f

Jean-Francois LHOMME for some images of fossil shark teeth, eg. Palaeohypotodus rutoti (Winkler, 1874)

Adam Anderson for a image of Megalolamna paradoxodon Shimada, Chandler, Lam, Tanaka & Ward, 2017

David Peters for a image of Cladoselache kepleri (Newberry, 1889)

Missing papers:

Many thanks to all friends of shark-references, who sent us some missing papers last month!

Shark-References would kindly like to ask you for your contribution to this project.

At the moment we are looking for some of the following papers:

Extinct Chondrichthyes:

new entry: Priem, R. (1920) Poissons fossils du Miocène d’Egypte. Burdigalien de Moghara, „Désert libyque“. In Fourtau: Contribution à l’étude des vertébrés miocènes de l’Egypte. Cairo 1920, pp. 8-15.

new entry: Arambourg, C. & Joleaud, L. (1943) Vertébrés fossiles du basin du Niger. Bulletin Direction des Mines, 7, 1–74

new entry:  Arambourg, C. (1954) Les Poissons Crétacés du Jebel Tselfat (Maroc). Notes et Mémoires du Service Géologique du Maroc, 118: 188 pp 18 Taf.

Numano, M. (1993) Some Neogene shark-teeth from Mogami area, Yamagata Prefecture. Applied Geology of Yamagata, 13: 32–49

new entry:  Schmitz, L. (2003) Fischzähne (Neoselachii; Actinopterygii) aus dem Unter-Barremium von NW-Deutschland. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 227, 175–199

Extant Chondrichthyes:

Chu, Y.-T.  (1930) A new species of the swallow ray (Pteroplatea) from China. China Journal, 12(6): 357

Smith, J.L.B. (1958) The mystery killer, the new shark Carcharhinus vanrooyeni. Veld & Vlei, 3 (9): 12–14, 28.

Deng, S.-M. & Xiong, G.-Q. & Zhan, H.-X. (1988) The deep water fishes of the east China Sea. Xue Lin Publishing house: 356 pp.

new entry: Barry, J.P. & Maher, N. (2000) Observations of the prickly shark, Echinorhinus cookei, from the oxygen minimum zone in Santa Barbara Basin, California. California Fish and Game, 86(3), 213–215

Please support www.shark-references.com and send missing papers (not listed papers or papers without the info-symbol) to juergen.pollerspoeck@shark-references.com or nicolas.straube@shark-references.com



Extant Chondrichthyes:
no news this month

Extinct Chondrichthyes:
Tomita, T. & Yabumoto, Y. & Kuga, N. (2023) A New Snaggletooth Shark Species, Hemipristis tanakai sp. Nnv., from the Ashiya Group (Oligocene), Northern Kyushu, Japan. Paleontological Research, 28(3), 273–278
New species: Hemipristis tanakai
Abstract: Hemipristis tanakai, a new species of snaggletooth shark (Order Carcharhiniformes, Family Hemigaleidae), is erected based on the fossil tooth specimens recovered from the Lower Oligocene of the Yamaga Formation of the Ashiya Group in Kyushu, Japan. This species was once proposed by Naoyuki Kuga in his dissertation in 1985, based on a single tooth; however, it has been considered unavailable because of its failure to meet the criteria of the International Code of Zoological Nomenclature. We reviewed this specimen, together with some additional specimens, and confirmed that it was distinguishable from existing congeners. This species is informative for the evolution of Hemipristis because it fills the gap in tooth morphology between Paleogene and Neogene species.
Chahud, A. (2023) Holocephali from the Irati Formation (Paraná Basin), Brazil: Origin, paleogeographical and paleoenvironmental considerations. Estudios Geologicos, 79(2), Article e155
New species: Fairchildodus rioclarensis
Abstract: The Irati Formation (Permian, Cisuralian) has several types of aquatic vertebrates, including species of Chondrichthyes. Two members of the Irati Formation are recognized, Assistência (upper) and Taquaral (lower). A sandy facies, at the base of the Taquaral Member, is noteworthy by the richness of the Chondrichthyes. The Holocephali are the most abundant and the species Itapyrodus punctatus is the most common. Recent studies with several specimens revealed that some morphotypes must belong to different species of the genus Itapyrodus. This genus is endemic to the two Brazilian Basins, Parnaíba and Paraná and is not related to any other known genus, justifying the proposition of the family Itapyrodidae. A new genus and species of this family was identified, Fairchildodus rioclarensis. The presence of this endemic family is an argument, among others, for a proposed isolation during the time of deposition of the Irati.
Pauliv, V.E. & Dias, E.V. & Sedor, F.A. & Weinschuetz, L.C. & Ribeiro, A.M. (2023) A new symmoriiform shark and other chondrichthyan teeth from the earliest Permian of southern Brazil. Revista Brasileira De Paleontologia, 26(3), 227–237
New species: Crioselache wittigi
Abstract: The Lontras Shale (Itararé Group, Paraná Basin) is a relevant late Paleozoic fossil stratum in western Gondwana known as a Lagerstätte, as it presents a great diversity that includes plants, invertebrates, ichnofossils and a rich ichthyofauna, mainly composed by exceptionally well-preserved actinopterygians. The chondrichthyan remains reported here are represented by three isolated teeth, collected in dark gray levels of the Lontras Shale from an outcrop known as Campaleo, located in Mafra municipality, northeastern region of the Santa Catarina State, south Brazil. One of these teeth is considered a new genus and species, which represents the first Brazilian Symmoriiformes species known so far, while the other two are attributed to undetermined Chondrichthyes. These chondrichthyans lived alongside brachiopods, poriferans, conodonts, actinopterygians, and crossopterygian fishes in cold waters of a periglacial environment during the earliest Asselian (Cisuralian, Permian) that represents the terminal stage of the Gondwanan Glaciation.

Menoret, A. & Ivanov, V.A. (2023) Cestodes of Pseudobatos horkelii (Müller and Henle) (Rhinopristiformes) including Rhinebothrium quequense n. sp. (Rhinebothriidea) and Caulobothrium pieroi n. sp. ("Tetraphyllidea") from the southwestern Atlantic. Zootaxa, 5361(1), 87–102
New species: Rhinebothrium quequense, Caulobothrium pieroi
Abstract: Two new species of cestodes were described from the Brazilian guitarfish, Pseudobatos horkelii (Müller and Henle) (Rhinopristiformes: Rhinobatidae), from coastal waters off Argentina in the southwestern Atlantic Ocean. Rhinebothrium quequense n. sp. (Rhinebothriidea) differs from its congeners by a combination of morphological characters, including the total number of loculi, the absence of loculi at the level of bothridial constriction, the number of testes per proglottid, and the number of proglottids per worm. Caulobothrium pieroi n. sp. (“Tetraphyllidea”) can be distinguished from the other members of the genus by the following set of morphological features including the presence of stalked bothridia with apical sucker, the number of loculi per bothridium, the number of testes per proglottid, and the number of proglottids per worm. The discovery of R. quequense n. sp. and C. pieroi n. sp. in the Brazilian guitarfish not only increases the number of rhinebothriideans and “tetraphyllideans” in the southwestern Atlantic, but also expands the elasmobranchs list to include P. horkelii for the first time as a new host record for cestodes globally. In addition, this is not only the first report of a species of Rhinebothrium in rhinobatids in the region, but it is also the first Caulobothrium species infecting a rhinopristiform batoid.


PLEASE send your new papers to
juergen.pollerspoeck@shark-references.com or 

Latest Research Articles

Extant Chondrichthyes:
Baeza, J.A. & Stephens, N.C. & Baker, A. & Lyons, A. & Franks, B. & Pirro, S. & Feldheim, K.A. (2024):  Insights into the nuclear and mitochondrial genome of the Lemon shark Negaprion brevirostris using low-coverage sequencing: Genome size, repetitive elements, mitochondrial genome, and phylogenetic placement. Gene, 894, Article 147939
Bagley, J.C. & Johnson, C.C. & McGregor, S.W. & Breitman, M.F. & Armbruster, J.W. & Harris, P.M. & O'Neil, P.E. (2023):  Marine and freshwater fishes of Alabama: a revised checklist and discussion of taxonomic issues. Zootaxa, 5357(3), 301–341
Bernardi, J. & De Maddalena, A. (2023):  On a porbeagle, Lamna nasus (Bonnaterre, 1788), observed near Brač, Croatia. Bollettino del Museo di Storia Naturale di Venezia, 74, 19-23
Black, C. (2023):  Resilience in the Depths: First Example of Fin Regeneration in a Silky Shark (Carcharhinus falciformis) following Traumatic Injury. Journal of Marine Sciences, Article 6639805
Briones, A.A.M. & Ramírez-Alvarez, N. & Hernández-Guzmán, F.A. & Galván-Magaña, F. & Marmolejo-Rodríguez, A.J. & Sánchez-González, A. & Baró-Camarasa, I. & González-Armas, R. (2024):  Levels and species-specific organochlorine accumulation in three shark species from the western Gulf of California with different life history traits. Science of the Total Environment, 908, Article 168468
Bucair, N. & Dias, H.N. & Nunes, A. & Coelho, K.K.F. & de Brito, R.M.S. & Sales, J.B.D. & Rincon, G. & Francini, R.B. & Dias, J.F. & Cintra, I.H.A. & Nunes, J.L.S. (2023):  Opportunistic sightings of manta rays on Brazil's Amazon Coast Journal of Fish Biology, in press
Bullock, R.W. & Foster, C. & Lea, J.S.E. (2023):  Just keep swimming? Observations of resting behavior in gray reef sharks Carcharhinus amblyrhynchos (Bleeker, 1856). Journal of Fish Biology, in press
Calle-Morán, M.D. & , Erazo-Garcés, H.M. & Hernández-Téllez, A.R. & Galván-Magaña, F. & Estupiñán-Montaño, C. (2023):  Feeding ecology of the shortfin mako shark, Isurus oxyrinchus, in the Ecuadorian Pacific Ocean. Journal of the Marine Biological Association of the United Kingdom, 103, Article e96
Capapé, C. & Reynaud, C. & Hemida, F. (2023):  Capture of a Giant Round Fantail Stingray Taeniurops grabatus (Dasyatidae) from the Algerian Coast (Southwestern Mediterranean Sea). Annales, Series Historia Naturalis, 33(2), 199–206
Cattano, C. & Gambardella, C. & Grancagnolo, D. & Principato, E. & Aglieri, G. & Turco, G. & Quattrocchi, F. & Milazzo, M. (2023):  Multiple interannual records of young-of-the-year identify an important area for the protection of the shortfin mako, Isurus oxyrinchus. Marine Environmental Research, 192, Article 106217
Chamorro, F. & Otero, P. & Carpena, M. & Fraga-Corral, M. & Echave, J. & Seyyedi-Mansour, S. & Cassani, L. & Prieto, M.A. (2023):  Health Benefits of Oily Fish: Illustrated with Blue Shark (Prionace glauca), Shortfin Mako Shark (Isurus oxyrinchus), and Swordfish (Xiphias gladius). Nutrients, 15(23), Article 4919
Costa, E.F.S. & Campanyà-Llovet, N. & Cuvelier, D. & Menezes, G.M. & Colaço, A. (2023):  Long-term trends in functional diversity of exploited marine fish in the Azores' archipelago: past and present. Frontiers in Marine Science, 10, Article 1243918
da Silva, R.P. & Barbosa, M.L.V. & Siciliano, S. & Hauser-Davis, R.A. & Souza, G.B.G. & Seminara, C.I. & Pavanelli, L. & Ikeda, J.M.P. (2023):  Necrophagy and Marine Megafauna Predation By Sharks in a Hotspot in the Southwest Atlantic Ocean. Thalassas, in press
Devloo-Delva, F. & Gosselin, T. & Butcher, P.A. & Grewe, P.M. & Huveneers, C. & Thomson, R.B. & Werry, J.M. & Feutry, P. (2023):  An R-based tool for identifying sex-linked markers from restriction site-associated DNA sequencing with applications to elasmobranch conservation. Conservation Genetics Resources, in press
Espinoza, R. & Chapman, D. & Morris, J. & Schoen, S.N. & Hagan, V. & Hueter, R. & Soto, M. & Abrams, R. & Sotomayor, P. (2024):  Characteristics and species composition of a small-scale shark fishery in Puerto Rico: Jurisdictional issues enable legal landings of prohibited and endangered species. Fisheries Research, 272, Article 106936
Eustache, K.B. & Boissin, É. & Tardy, C. & Bouyoucos, I.A. & Rummer, J.L. & Planes, S. (2023):  Genetic evidence for plastic reproductive philopatry and matrotrophy in blacktip reef sharks (Carcharhinus melanopterus) of the Moorea Island (French Polynesia). Scientific Reports, 13(1), Article 14913
Fauconnet, L. & Morato, T. & Das, D. & Catarino, D. & Fontes, J. & Giacomello, E. & Afonso, P. (2024):  First assessment of circle hooks as bycatch mitigation measure for deep-water sharks on longline fisheries. Fisheries Research, 270, Article 106877
Fernández-Corredor, E. & Ouled-Cheikh, J. & Navarro, J. & Coll, M. (2023):  An overview of the ecological roles of Mediterranean chondrichthyans through extinction scenarios. Reviews in Fish Biology and Fisheries, in press
Grancagnolo, D. & Cattano, C. & Quattrocchi, F. & Milazzo, M. (2023):  Preliminary evidence of a potential reproductive aggregation area of the common stingray Dasyatis pastinaca (Linnaeus, 1758) (Chondrichthyes - Dasyatidae) in the Central Mediterranean Sea. Mediterranean Marine Science, 24(3), 639–643
Grosse, T. & Awruch, C. & Harvey, E. & Saunders, B. & Dowling, C. & Waltrick, D. & Braccini, M. (2023):  An integrated approach for assessing the survival of discarded sandbar sharks, Carcharhinus plumbeus, captured in scientific longlines. Marine and Freshwater Research, 74(17), 1433–1444
Hasenei, A. & Donelson, J.M. & Ravasi, T. & Rummer, J.L. (2023):  Sharks and their relatives: can their past help predict their future? Frontiers in Marine Science, 10, Article 1268532
Humble, E. & Hosegood, J. & Carvalho, G. & de Bruyn, M. & Creer, S. & Stevens, G.M.W. & Armstrong, A. & Bonfil, R. & Deakos, M. & Fernando, D. & Froman, N. & Peel, L.R. & Pollett, S. & Ponzo, A. & Stewart, J.D. & Wintner, S. & Ogden, R. (2023):  Comparative population genomics of manta rays has global implications for management. Molecular Ecology, in press
Kraft, S. & Winkler, A.C. & Abecasis, D. (2023):  Small coastal marine protected areas offer recurring, seasonal protection to the common stingray (Dasyatis pastinaca). Ocean & Coastal Management, 246, Article 106891
Lamas, D. & Massa, A. (2023):  Abstract Extraction and purification of enzymes from the Southern eagle ray (Myliobatis goodei) by-products and their compatibility with detergents: A practical approach towards circular economy. Iranian Journal of Fisheries Sciences, 22(4), 853–870
Leeney, R.H. & Ebert, D.A. & Grobler, K. (2023):  First record of Warren's sixgill sawshark Pliotrema warreni (Pristiophoriformes: Pristiophoridae) and the West African catshark Scyliorhinus cervigoni (Carcharhiniformes: Scyliorhinidae) in Namibia, and notes on the habitat of the bull shark Carcharhinus leucas (Carcharhiniformes: Carcharhinidae). Journal of the Marine Biological Association of the United Kingdom, 103, Article e97
Lim, K.C. & Then, A.Y.H. & Loh, K.H. (2023):  Feeding ecology and reproductive biology of small coastal sharks in Malaysian waters. Peerj, 11, Article e15849
Lima, F.D. & Parra, H. & Alves, R.B. & Santos, M.A.R. & Bjorndal, K.A. & Bolten, A.B. & Vandeperre, F. (2023):  Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study. Plos One, 18(10), Article e0292727
Lines, R. & Juggernauth, M. & Peverley, G. & Keating, J. & Simpson, T. & Mousavi-Derazmahalleh, M. & Bunce, M. & Taysom, A. & Bernardino, A.F. & Whittle, P. (2023):  A large scale temporal and spatial environmental DNA biodiversity survey of marine vertebrates in Brazil following the Fundao tailings dam failure. Marine Environmental Research, 192, Article 106239
Losen, B. (2023):  Shark attack risk on Reunion Island: Emphasis on local media construction. Marine Policy, 157, Article 105851
Lu, D.F. & Huang, X.W. & Zhao, R.R. & Xie, X.Y. & Cai, S.S. (2023):  Characterization and Phylogenetic Analysis of the Complete Mitochondrial Genome of white-spotted Bamboo Shark (Chiloscyllium plagiosum). Thalassas, in press
Magaña-Hernández, L. & Wagh, A.S. & Fathi, J.G. & Robles, J.E. & Rubio, B. & Yusuf, Y. & Rose, E.E. & Brown, D.E. & Perry, P.E. & Hamada, E. & Anastassov, I.A. (2023):  Ultrastructural Characteristics and Synaptic Connectivity of Photoreceptors in the Simplex Retina of Little Skate (Leucoraja erinacea). Eneuro, 10(10), Article Eneuro0226232023
Mather, R. & Chin, A. & Rigby, C. & Cooke, S.J. & Fahmi, Haque, A.B. & Mizrahi, M. & Grant, M.I. (2023):  Murky waters: Assessing the vulnerabilities of Indo-West Pacific non-marine elasmobranchs to inform future conservation planning priorities. Aquatic Conservation-Marine and Freshwater Ecosystems, in press
McAllister, M. & Fraser, S. & Henry, L.A. (2023):  Population ecology and juvenile density hotspots of thornback ray (Raja clavata) around the Shetland Islands, Scotland. Journal of Fish Biology, in press
Molina, J.M. & Yoon, S. & Elisio, M. & Kasai, A. (2023):  Bioenergetic Model of the Highly Exploited Shark Mustelus schmitti under a Global Warming Context. Diversity, 15(11), Article 1118
Morales, A.H. & Pisa, J.H. & Gomez, M. & Romero, C.M. & Vittone, M. & Massa, A.E. & Lamas, D.L. (2023):  Comparative oil extraction from mutt (Myliobatis goodei) liver by enzymatic hydrolysis: free versus immobilized biocatalyst. Journal of the Science of Food and Agriculture, in press
Nakada-Masuta, T. & Takeda, H. & Uchida, K. (2023):  Novel Approach for Obtaining Variable Domain of New Antigen Receptor with Different Physicochemical Properties from Japanese Topeshark (Hemitriakis japanica). Marine Drugs, 21(11), Article 550
O'Keefe, M. & Bengil, E.G.T. & Palmer, J.L. & Beton, D. & Çaglar, C. & Godley, B.J. & Özkan, M. & Snape, R.T.E. & Broderick, A.C. (2023):  Diversity and distribution of elasmobranchs in the coastal waters of Cyprus: using bycatch data to inform management and conservation. Frontiers in Marine Science, 10, Article 1181437
Orlov, A.M. & Orlova, S.Y. (2024):  Eastward journey: a second capture and first genetically confirmed record of Greenland shark Somniosus microcephalus in the Laptev Sea (Siberian Arctic). Environmental Biology of Fishes, in press
Palacios, M.D. & Trejo-Ramírez, A. & Velázquez-Hernández, S. & Huesca-Mayorga, S.A.K. & Stewart, J.D. & Cronin, M.R. & Lezama-Ochoa, N. & Zilliacus, K.M. & González-Armas, R. & Galván-Magaña, F. & Croll, D.A. (2024):  Reproductive behavior, seasonality, and distribution of three devil ray species (Mobula mobular, M. thurstoni, and M. munkiana) in the Southern Gulf of California, Mexico. Marine Biology, 171(1), Article 12
Papastamatiou, Y.P. & Binder, B.M. & Boswell, K.M. & Malone, M.A. & Heithaus, M.R. & Huveneers, C. & Mourier, J. & Harborne, A.R. (2023):  Dynamic energy landscapes of predators and the implications for modifying prey risk. Functional Ecology, in press
Pena-Cutimbo, N. & Cordero-Maldonado, C. & Ortiz-Alvarez, C. & Alfaro-Shigueto, J. & Mangel, J.C. (2024):  Marine megafauna interactions with the Peruvian artisanal purse-seine fleet. Fisheries Research, 269, Article 106878
Plumlee, J.D. & Branham, C. & Ryburn, S.J. & Fodrie, F.J. (2023):  Trophic partitioning among seasonally resident predators in a temperate estuary. Marine Ecology Progress Series, 721, 119–133
Poisson, F. & Demarcq, H. & Coudray, S. & Bohn, J. & Camiñas, J.A. & Groul, J.M. & March, D. (2024):  Movement pathways and habitat use of blue sharks (Prionace glauca) in the Western Mediterranean Sea: Distribution in relation to environmental factors, reproductive biology, and conservation issues. Fisheries Research, 270, Article 106900
Porceddu, R. & Porcu, C. & Mulas, G. & Spiga, S. & Follesa, M.C. (2024):  Ontogenetic changes in the tyrosine hydroxylase immunoreactive preoptic area in the small-spotted catshark Scyliorhinus canicula (L., 1758) females: catecholaminergic involvement in sexual maturation. Frontiers in Neuroanatomy, 17, Article 1301651
Prasetyo, A.P. & Cusa, M. & Murray, J.M. & Agung, F. & Muttaqin, E. & Mariani, S. & McDevitt, A.D. (2023):  Universal closed-tube barcoding for monitoring the shark and ray trade in megadiverse conservation hotspots. Iscience, 26(7), Article 107065
Prinzing, T.S. & Bigman, J.S. & Skelton, Z.R. & Dulvy, N.K. & Wegner, N.C. (2023):  The allometric scaling of oxygen supply and demand in the California horn shark, Heterodontus francisci. Journal of Experimental Biology, 226(15), Article jeb246054
Scacco, U. & Gennari, E. & Di Crescenzo, S. & Fanelli, E. (2023):  Looking into the prevalence of bycatch juveniles of critically endangered elasmobranchs: a case study from pelagic longline and trammel net fisheries of the Asinara Gulf (western Mediterranean). Frontiers in Marine Science, 10, Article 1303961
Sembiring, A. & Anggoro, A.W. & Cahyani, N.K.D. & Pertiwi, N.P.D. & Yusmalinda, N.L.A. & Momigliano, P. & Astarini, I.A. & Gautama, D.A. & Al Malik, M.D. & Mahardika, G.N. & Liu, S.Y.V. (2023):  The genetic connectivity of the silky shark (Carcharhinus falciformis) across Indonesia. Regional Studies in Marine Science, 68, Article 103230
Shaker, N.A. & Ibrahium, A.M. (2023):  Anatomical variation between the muscles of mastication in black-tip shark (Carcharhinus limbatus) and shovelnose ray Fish (Glaucostegus typus). Zoomorphology, in press
Sumikawa, H. & Naraoka, Y. & Obayashi, Y. & Fukue, T. & Miyoshi, T. (2023):  Fluid dynamic properties of shark caudal fin morphology and its relationship to habitats. Ichthyological Research, in press
Torres, Y. & Rotundo, M.M. & Vianna, M. & Charvet, P. & Faria, V.V. & Oliveira, C. & Foresti, F. & Cruz, V.P. (2023):  Population structure of the critically endangered Brazilian guitarfish Pseudobatos horkelii (Rhinobatidae) revealed by double-digest restriction site-associated DNA sequencing. Aquatic Conservation-Marine and Freshwater Ecosystems, in press
Truax, J. & Vonk, J. & Meri, E. & Troxell-Smith, S.M. (2023):  Aquarium Visitors Catch Some Rays: Rays Are More Active in the Presence of More Visitors. Animals, 13(22), Article 3526
Wang, C. & Ye, P.Y. & Pillans, R. & Chen, X. & Wang, J.J. & Feutry, P. (2023):  Evolution of the Critically Endangered Green Sawfish Pristis zijsron (Rhinopristiformes, Pristidae), Inferred from the Whole Mitochondrial Genome. Genes, 14(11), Article 2052

Extinct Chondrichthyes:
Agnolín, F.L. & Herrera, G.A. & Rolando, M.A. & Motta, M. & Rozadilla, S. & Verdiquio, L. & D'Angelo, J.S. & Moyano-Paz, D. & Varela, A.N. & Sterli, J. & Bogan, S. & Miner, S. & Rodríguez, A.M. & Muñoz, G. & Isasi, M.P. & Novas, F.E. (2024):  Fossil vertebrates from the Cerro Fortaleza Formation (Upper Cretaceous), Santa Cruz Province, Argentina. Cretaceous Research, 154, Article 105735
Babcock, L.E. (2024):  Replacement names for two species of Orthacanthus Agassiz, 1843 (Chondrichthyes, Xenacanthiformes), and discussion of Giebelodus Whitley, 1940, replacement name for Chilodus Giebel, 1848 (Chondrichthyes, Xenacanthiformes), preoccupied by Chilodus Müller & Troschel, 1844 (Actinopterygii, Characiformes). ZooKeys, 1188, 219–226
Benavides-Cabra, C.D. & Páramo-Fonseca, M.E. & Palma-Castro, H.D. & Narváez-Rincón, J.A. & Ramos-Clavijo, M.P. (2023):  Stratigraphic distribution of marine vertebrates from the Arcillolitas abigarradas Member (Paja Formation) of the Villa de Leiva - Sáchica - Sutamarchán region, Boyacá, Colombia. Earth Sciences Research Journal, 27(3), 211–226
Cabral, J.J. & Hazevoet, C.J. (2023):  On teeth of Otodus megalodon (Lamniformes: Otodontidae) from Cabo Verde, eastern Atlantic. Zoologia Caboverdiana, 11(2), 36–38    
Capassoa, L. & Yamaguchi, A. (2023):  A batoid hembryo (Chondrichthyes: Batoidea), from the marine upper Cenomanian (Late Cretaceous) Sannine limestone of Hjoula, Lebanon. Historical Biology, in press
Chahud, A. (2023):  Holocephali from the Irati Formation (Paraná Basin), Brazil: Origin, paleogeographical and paleoenvironmental considerations. Estudios Geologicos, 79(2), Article e155
Collareta, A. & Casati, S. & Mulè, F. & Farina, S. & Di Cencio, A. (2023):  Re-discovery of bramble shark dermal denticles in the marine Pliocene of Italy. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 310(1), 25–32
Ebersole, J.A. & Cicimurri, D.J. & Ebersole, S.M. (2024):  Additions to the Pliocene fish assemblage (Chondrichthyes; Osteichthyes) from Dauphin Island, Alabama, USA. Paleoichthys, 8, 1–20    
Gieser, R. & Shell, R. & Thomas, M.J. & Davis, M. (2023):  First records of the chondrichthyans Heslerodus and Ossianodus from the Upper Pennsylvanian LaSalle Limestone (Bond Formation) of northern Illinois. Kentiana, 5, Article 1439
Kilmury, A.A. & Anderson, A. & Wijesinghe, D.S. & Verstraete, A.F. & Ezeana, W. & Anderson, A.E. & Brink, K.S. (2023):  Microvertebrate faunal assemblages of the Favel Formation (late Cenomanian-middle Turonian) of Manitoba, Canada. Peerj, 11, Article e15493
Mazurek, D. & Antczak, M. (2023):  Late Cretaceous coprolite from the Opole area (southern Poland) as evidence for a variable diet in shell-crushing shark Ptychodus (Elasmobranchii: Ptychodontidae). PeerJ, 11, Article e16598
Pauliv, V.E. & Dias, E.V. & Sedor, F.A. & Weinschuetz, L.C. & Ribeiro, A.M. (2023):  A new symmoriiform shark and other chondrichthyan teeth from the earliest Permian of southern Brazil. Revista Brasileira De Paleontologia, 26(3), 227–237
Pollerspöck, J. & Unger, E. (2023):  „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Hayfische (Selachoidei A. Günther) (Probst 1878). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 179, 197–255
Popov, E.V. &Lopyrev, V.A, & Panteleev, A.V. & Biriukov, A.V. & Timirchev, F.K. (2024):  Chondrichthyan fishes from the Middle Eocene Osinovaya Formation of Rostov Region, Russia. Historical Biology, in press
Rottke, J. (2023):  Zwei Bergungen jeweils mehrerer Zähne von Squalicorax kaupi (Agassiz, 1843) in Misburg und Höver. Arbeitskreis Paläontologie Hannover, 51, 168–172    
Shimada, K. & Boessenecker, R.W. & Perez, V.J. & Kent, B.W. (2023):  New geographic and stratigraphic occurrences of the enigmatic extinct lamniform shark, Megalolamna (Lamniformes: Otodontidae), from the eastern USA. Historical Biology, in press
Sternes, P.C. & Jambura, P.L. & Türtscher, J. & Kriwet, J. & Siversson, M. & Feichtinger, I. & Naylor, G.J.P. & Summers, A.P. & Maisey, J.G. & Tomita, T. & Moyer, J.K. & Higham, T.E. & da Silva, J.P.C.B. & Bornatowski, H. & Long, D.J. & Perez, V.J. & Collareta, A. & Underwood, C. & Ward, D.J. & Vullo, R. & González-Barba, G. & Maisch, H.M. & Griffiths, M.L. & Becker, M.A. & Wood, J.J. & Shimada, K. (2024):  White shark comparison reveals a slender body for the extinct megatooth shark, Otodus megalodon (Lamniformes: Otodontidae). Palaeontologia Electronica, 27(1), Article a4
Tomita, T. & Yabumoto, Y. & Kuga, N. (2023):  A New Snaggletooth Shark Species, Hemipristis tanakai Sp. Nov., from the Ashiya Group (Oligocene), Northern Kyushu, Japan. Paleontological Research, 28(3), 273–278


Menoret, A. & Ivanov, V.A. (2023):  Cestodes of Pseudobatos horkelii (Müller and Henle) (Rhinopristiformes) including Rhinebothrium quequense n. sp. (Rhinebothriidea) and Caulobothrium pieroi n. sp. ("Tetraphyllidea") from the southwestern Atlantic. Zootaxa, 5361(1), 87–102
Montes, M.M. & Gómez, S. & Castro, R.R. & Bovcon, N. & Vettorazzi, R.I. & Serrano, C.F. & Cardarella, G.F.R. & Ferrari, W. & Cuevas, J.M. & Martorelli, S.R. (2023):  How many species of genus Lernaeopoda Blainville, 1822 (Siphonostomatoida: Lernaeopodidae) are there in the southwestern Atlantic? Zootaxa, 5346(4), 469–488



New Study Documents First in-situ Discovery of Fossil Megalodon Tooth in Deep Pacific Ocean

Click here for the video interview of Ocean Exploration Trust’s Jamie Zaccaria and study co-authors Dr. Nicolas Straube and Jürgen Pollerspöck.

Beyond Jaws

New episode of the podcast Beyond Jaws!

Andrew Lewin and Dr. David Ebert discuss the extinction of the Java Stingray and its implications for other flat shark species. They delve into the history of shark science, from the public's initial fear and curiosity to the growth of the field and the diverse areas of research within it. With guest Julia, they explore the importance of understanding and conserving lesser-known shark species for the health of our ecosystems.

While the topic may be sad, the episode offers a positive outlook on the future of shark conservation.


Both Beyond Jaws audio and video shows can be followed and subscribed. Beyond Jaws is supported by the Save Our Seas Foundation.

Study uncovers mechanics of machete-like 'tail-whipping' in thresher sharks

Date: January 17, 2024
Source: Florida Atlantic University
Summary: Like Indiana Jones, thresher sharks have mastered the art of the whip using their tails. Now, new research provides intricate details showing that vertebrae anatomy might support the mechanics of extreme body bending in thresher sharks, enabling these expert hunters to weaponize their tails. Using micro-CT scanning similar to CAT scans in humans, and two-dimensional shape analysis, results of the study suggest vertebral anatomy and mineralized microstructure meet the demands required for fast swimming and tail-whipping behavior seen in these species.

A global study reveals pathways to save threatened sharks, despite rising mortality trends

Even with widespread regulations, increasing shark mortality has created 'a global problem of staggering proportions'

Date: January 11, 2024
Source: University of California - Santa Barbara
Summary: Sharks have persisted as powerful ocean predators for more than 400 million years. They survived five mass extinctions, diversifying into an amazing variety of forms and lifestyles. But this ancient lineage is now among the world's most threatened species groups due to overexploitation in poorly regulated fisheries and the proliferation of wasteful finning practices.


New IUCN Shark News Newsletter is out!
Download: https://www.iucnssg.org/shark-news.html