Meridiogaleus cristatus
Engelbrecht, Mörs, Reguero & Kriwet, 2017
Classification: Elasmobranchii Carcharhiniformes Triakidae
Reference of the original description
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
Types
Meridiogaleus cristatus
Holotype: NRM-PZ: P16243; Paratype: NRM-PZ: P16241–16242, P 16244; NRM-PZ: P16079– 16081; NRM-PZ: P16133–16135; NRM-PZ: P16222; NRM-PZ: P16223;
Meridiogaleus cristatus
Holotype: NRM-PZ: P16243; Paratype: NRM-PZ: P16241–16242, P 16244; NRM-PZ: P16079– 16081; NRM-PZ: P16133–16135; NRM-PZ: P16222; NRM-PZ: P16223;
Description:
Citation: Meridiogaleus cristatus Engelbrecht, Mörs, Reguero & Kriwet, 2017: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Description
Original diagnosis after Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864]: Fossil triakid shark characterized by the following combination of dental characters: tooth crown mesiodistally wider than high (anterior to posterior teeth); principal cusp well developed and displaced distally; lack of mesial and distal cusplets; mesial cutting edge on lateral teeth concave; distal cutting edge short; short and fine to coarse costules on the basal mesial heel (sometimes short and fine costules on distal shoulder present); lack of labial ornamentation; apron-like bulge at the basal labial crown face overhanging the root labially; and rather high root lobes, which are well separated from each other.
Original diagnosis after Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864]: Fossil triakid shark characterized by the following combination of dental characters: tooth crown mesiodistally wider than high (anterior to posterior teeth); principal cusp well developed and displaced distally; lack of mesial and distal cusplets; mesial cutting edge on lateral teeth concave; distal cutting edge short; short and fine to coarse costules on the basal mesial heel (sometimes short and fine costules on distal shoulder present); lack of labial ornamentation; apron-like bulge at the basal labial crown face overhanging the root labially; and rather high root lobes, which are well separated from each other.
Remarks
shark-references Species-ID=14962;
type species of Meridiogaleus Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=14962;
type species of Meridiogaleus Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864] by monotypy (Art. 68.3 ICZN);
References
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
DOI: 10.1080/02724634.2017.1371724
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
DOI: 10.1080/02724634.2017.1371724
