Protoheterodontus boussioni

(Guinot, Underwood, Cappetta & Ward, 2013)


Classification: Elasmobranchii Heterodontiformes Heterodontidae

Reference of the original description
Guinot, G. & Underwood, C.J. & Cappetta, H. & Ward, D.J. (2013)
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671

Synonyms / new combinations and misspellings
Heterodontus aff. boussioni, Heterodontus boussioni

Types
Protoheterodontus boussioni

Heterodontus boussioni
Holotype: USTL: HAL2-8;


Description:


Citation: Protoheterodontus boussioni (Guinot, Underwood, Cappetta & Ward, 2013): In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 12/2024

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Description
Original diagnose after Guinot et al. (2013) p. 601 [24889]: Anterior teeth cuspidate and higher than wide, with triangular and biconvex main cusp inclined lingually; one pair of slightly diverging lateral cusplets united to main cusp with well-developed outer cutting edge; heartshaped occlusal outline of the crown; broad apron with concave labial edge, depression on the apron at the base of the cusplets; strong labial ornamentation of more or less strong irregular vertical folds, anastomosed near labial edge; broad triangular mediolingual protuberance. V-shaped root with narrow branches; lingual protuberance with lingual foramen, basal face with one central and several labial foramina. Low, mesiodistally developed and labiolingually compressed lateral teeth of sigmoid occlusal outline; sigmoid and marked occlusal crest; lingual ornament of parallel labiolingually oriented ridges; labial ornament reticulate with occasional incipient secondary occlusal crest. Flat basal root face; oblique duct; several lingual and labial foramina.

Remarks
shark-references Species-ID=15379;

References
Guinot, G. & Condamine, F.L. (2023)
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
Hovestadt, D.C. (2018)
Reassessment and revision of the fossil Heterodontidae (Chondrichthyes: Neoselachii) based on tooth morphology of extant taxa. Palaeontos, 30, 1–73
Hovestadt, D.C. (2018)
Reassessment and revision of the fossil Heterodontidae (Chondrichthyes: Neoselachii) based on tooth morphology of extant taxa. Palaeontos, 30, 1–73
Guinot, G. & Underwood, C.J. & Cappetta, H. & Ward, D.J. (2013)
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671
DOI: 10.1080/14772019.2013.767286
Guinot, G. (2013)
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388, 23–41
DOI: 10.1016/j.palaeo.2013.07.027
Guinot, G. (2013)
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
Guinot, G. (2013)
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388, 23–41
DOI: 10.1016/j.palaeo.2013.07.027
Guinot, G. (2013)
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