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
List of skeletal material from megatooth sharks (Lamniformes, Otodontidae). Paleoichthys, 4, 1–9
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
List of skeletal material from megatooth sharks (Lamniformes, Otodontidae). Paleoichthys, 4, 1–9
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
