Cretalamna bryanti
Ebersole & Ehret, 2018
Classification: Elasmobranchii Lamniformes Otodontidae
Reference of the original description
A new species of Cretalamna sensu stricto (Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA. PeerJ, 6, Article e4229
A new species of Cretalamna sensu stricto (Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA. PeerJ, 6, Article e4229
Description:
Citation: Cretalamna bryanti Ebersole & Ehret, 2018: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Ebersole & Ehret, 2018 [25964]: Anterior teeth with a tall triangular main cusp, and single pair of divergent, lanceolate, lateral cusplets. Small secondary cusplets may be present on larger anterior teeth. Pronounced triangular root boss present with deep U-shaped basal concavity. Root lobes are long, range from rounded to angular (but are often angular distally), and are not as divergent as other C. appendiculata-like taxa. Anteriorly situated lateroposterior teeth have tall, triangular, distally inclined or distally hooked main cusp, and V-shaped neck (collar). One to two pairs of divergent, lanceolate, lateral cusplets present. Roots are symmetrical in basal view. Basal concavity is U-shaped. Lateroposterior teeth have a triangular main cusp with a strong distal hook, one to two pairs of divergent and lanceolate lateral cusplets, and labially inclined roots. Root lobes are scalloped on some teeth, and all have a shallow U-shaped basal concavity.
Original diagnosis after Ebersole & Ehret, 2018 [25964]: Anterior teeth with a tall triangular main cusp, and single pair of divergent, lanceolate, lateral cusplets. Small secondary cusplets may be present on larger anterior teeth. Pronounced triangular root boss present with deep U-shaped basal concavity. Root lobes are long, range from rounded to angular (but are often angular distally), and are not as divergent as other C. appendiculata-like taxa. Anteriorly situated lateroposterior teeth have tall, triangular, distally inclined or distally hooked main cusp, and V-shaped neck (collar). One to two pairs of divergent, lanceolate, lateral cusplets present. Roots are symmetrical in basal view. Basal concavity is U-shaped. Lateroposterior teeth have a triangular main cusp with a strong distal hook, one to two pairs of divergent and lanceolate lateral cusplets, and labially inclined roots. Root lobes are scalloped on some teeth, and all have a shallow U-shaped basal concavity.
Remarks
shark-references Species-ID=15007;
shark-references Species-ID=15007;
References
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
Feeding ecology has shaped the evolution of modern sharks. Current Biology, 31(23), 5138–5148
DOI: 10.1016/j.cub.2021.09.028
A new species of Cretalamna sensu stricto (Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA. PeerJ, 6, Article e4229
DOI: 10.7717/peerj.4229
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
Feeding ecology has shaped the evolution of modern sharks. Current Biology, 31(23), 5138–5148
DOI: 10.1016/j.cub.2021.09.028
A new species of Cretalamna sensu stricto (Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA. PeerJ, 6, Article e4229
DOI: 10.7717/peerj.4229









