Cretalamna hattini
Siverson, Lindgren, Newbrey, Cederström & Cook, 2015
Classification: Elasmobranchii Lamniformes Otodontidae
Reference of the original description
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
Synonyms / new combinations and misspellings
Cretolamna hattini
Cretolamna hattini
Description:
Citation: Cretalamna hattini Siverson, Lindgren, Newbrey, Cederström & Cook, 2015: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
Description
Original diagnosis after Siverson, Lindgren, Newbrey, Cederström & Cook, 2015 [22014]: Quadrate process more than twice as high as dorsoventrally narrowest part of palatoquadrate, anterior to quadrate process but posterior to section harbouring ante rior tooth files. No tooth-size reduction across the anterior/ lateroposterior boundary in upper jaw. Gradational change in root morphology in basal view from second upper anterior to lateroposterior teeth. All aspects of tooth morphology in second upper jaw tooth closer to those of adjacent upper lateroposterior teeth than to first upper anterior tooth. No teeth in dentition with recurved cusp. Apical two thirds of mesial cutting edge of cusp markedly convex in all teeth. Vertebral centra with moderately robust, densely packed radial lamellae, sometimes bifurcating distally, next to corpus calcarea. Circular lamellae absent. Neural arch foramina moderately narrow, subovate, extending full length of centrum. Thickness of corpus calcareum 1/7th of length of centrum.
Original diagnosis after Siverson, Lindgren, Newbrey, Cederström & Cook, 2015 [22014]: Quadrate process more than twice as high as dorsoventrally narrowest part of palatoquadrate, anterior to quadrate process but posterior to section harbouring ante rior tooth files. No tooth-size reduction across the anterior/ lateroposterior boundary in upper jaw. Gradational change in root morphology in basal view from second upper anterior to lateroposterior teeth. All aspects of tooth morphology in second upper jaw tooth closer to those of adjacent upper lateroposterior teeth than to first upper anterior tooth. No teeth in dentition with recurved cusp. Apical two thirds of mesial cutting edge of cusp markedly convex in all teeth. Vertebral centra with moderately robust, densely packed radial lamellae, sometimes bifurcating distally, next to corpus calcarea. Circular lamellae absent. Neural arch foramina moderately narrow, subovate, extending full length of centrum. Thickness of corpus calcareum 1/7th of length of centrum.
Remarks
shark-references Species-ID=14223;
shark-references Species-ID=14223;
References
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
Phylogenetic affinity of the extinct shark family Otodontidae within Lamniformes remains uncertain - Comments on “List of skeletal material from megatooth sharks (Lamniformes, Otodontidae)” by Greenfield. Paleoichthys, 6, 1–5
Additions to “List of skeletal material from megatooth sharks”, with a response to Shimada (2022). Paleoichthys, 6, 6–11
List of skeletal material from megatooth sharks (Lamniformes, Otodontidae). Paleoichthys, 4, 1–9
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
DOI: 10.4202/app.2012.0137
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
Phylogenetic affinity of the extinct shark family Otodontidae within Lamniformes remains uncertain - Comments on “List of skeletal material from megatooth sharks (Lamniformes, Otodontidae)” by Greenfield. Paleoichthys, 6, 1–5
Additions to “List of skeletal material from megatooth sharks”, with a response to Shimada (2022). Paleoichthys, 6, 6–11
List of skeletal material from megatooth sharks (Lamniformes, Otodontidae). Paleoichthys, 4, 1–9
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
DOI: 10.4202/app.2012.0137
