Ptychotrygon ledouxi
Cappetta, 1973
Classification: Elasmobranchii Rajiformes Ptychotrygonidae
Reference of the original description
Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
Description:
Citation: Ptychotrygon ledouxi Cappetta, 1973: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 07/2025
Description
Diagnosis after Cappetta, 1973 [316]: Teeth of fairly small size, with slightly curved highly ornamented crown. Three distinct transverse crests separated by two depressions, the anterior one fairly wide, the posterior one narrow and deep. Anterior zone of the crown highly ornamented. Abrupt posterior face, with slightly projecting medio-posterior uvula. Projecting apron in lateral teeth.
Diagnosis after Cappetta, 1973 [316]: Teeth of fairly small size, with slightly curved highly ornamented crown. Three distinct transverse crests separated by two depressions, the anterior one fairly wide, the posterior one narrow and deep. Anterior zone of the crown highly ornamented. Abrupt posterior face, with slightly projecting medio-posterior uvula. Projecting apron in lateral teeth.
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
The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy. Journal of Vertebrate Paleontology, 42(2), Article e2162411
DOI: 10.1080/02724634.2022.2162411
Upper Cretaceous sharks from the Black Hills region, Wyoming and South Dakota. Mountain Geologist, 16(2), 59–66
Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy. Journal of Vertebrate Paleontology, 42(2), Article e2162411
DOI: 10.1080/02724634.2022.2162411
Upper Cretaceous sharks from the Black Hills region, Wyoming and South Dakota. Mountain Geologist, 16(2), 59–66
Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
