Cederstroemia cf. siverssoni
Guinot, Underwood, Cappetta & Ward, 2013
Classification: Elasmobranchii Orectolobiformes Orectolobidae
Reference of the original description
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671
Types
Cederstroemia cf. siverssoni
Cederstroemia cf. siverssoni
Description:
Citation: Cederstroemia cf. siverssoni Guinot, Underwood, Cappetta & Ward, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2024
No image available.
Please send your images of "Cederstroemia cf. siverssoni" to
info@shark-references.com
Please send your images of "Cederstroemia cf. siverssoni" to
info@shark-references.com
Description
Original diagnose after Guinot et al. (2013) p. 619 [24889]: Orectolobiform with gradient monognathic and possible dignathic heterodonty. Teeth as high as wide in anterior files, gradually broader than high in more lateral files. Low and bulky triangular cusp broadly united to heels. High heels sub-horizontal in anterior teeth and strongly inclined in lateral and posteriors; well-developed cutting edges of heels with labially directed and occasionally bifid lateral extremities. Slight ornament of short and parallel vertical ridges on the lateral extremity of the lingual face of the heels. Well-developed and elongate apron rectangular to weakly digitate and protruding labially; basal edge of the apron reaching or overtaking the baseline of the root. Broad lingual protuberance of the crown not reaching the baseline of the root. Basal root face rectangular, hemiaulacorhize to partially holaulacorhize (nutritive groove open on the lingual half of the basal face) in posteriors. Numerous marginolingual foramina.
Original diagnose after Guinot et al. (2013) p. 619 [24889]: Orectolobiform with gradient monognathic and possible dignathic heterodonty. Teeth as high as wide in anterior files, gradually broader than high in more lateral files. Low and bulky triangular cusp broadly united to heels. High heels sub-horizontal in anterior teeth and strongly inclined in lateral and posteriors; well-developed cutting edges of heels with labially directed and occasionally bifid lateral extremities. Slight ornament of short and parallel vertical ridges on the lateral extremity of the lingual face of the heels. Well-developed and elongate apron rectangular to weakly digitate and protruding labially; basal edge of the apron reaching or overtaking the baseline of the root. Broad lingual protuberance of the crown not reaching the baseline of the root. Basal root face rectangular, hemiaulacorhize to partially holaulacorhize (nutritive groove open on the lingual half of the basal face) in posteriors. Numerous marginolingual foramina.
Remarks
shark-references Species-ID=13614;
shark-references Species-ID=13614;
References
Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine. Cretaceous Research, 117, Article 104603
DOI: 10.1016/j.cretres.2020.104603
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388, 23–41
DOI: 10.1016/j.palaeo.2013.07.027
Regional to global patterns in Late Cretaceous selachian (Chondrichthyes, Euselachii) diversity. Journal of Vertebrate Paleontology, 33(3), 521–531
DOI: 10.1080/02724634.2013.740116
Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine. Cretaceous Research, 117, Article 104603
DOI: 10.1016/j.cretres.2020.104603
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388, 23–41
DOI: 10.1016/j.palaeo.2013.07.027
Regional to global patterns in Late Cretaceous selachian (Chondrichthyes, Euselachii) diversity. Journal of Vertebrate Paleontology, 33(3), 521–531
DOI: 10.1080/02724634.2013.740116
