Ptychotrygon ameghinorum
Begat, Kriwet, Gelfo, Cavalli, Schultz & Martin, 2023
Classification: Elasmobranchii Rajiformes Ptychotrygonidae
Reference of the original description
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
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
Description:
Citation: Ptychotrygon ameghinorum Begat, Kriwet, Gelfo, Cavalli, Schultz & Martin, 2023: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Description
Original diagnosis after Begat, Kriwet, Gelfo, Cavalli, Schultz & Martin, 2023 [31518]: A species of Ptychotrygon characterized by three well-developed transverse crests on the oral tooth crown, the median transverse crest being the best-developed; a well-developed, sharp, and erected central cusp may be present; apron well-developed, rounded, bearing small ridges; lingual uvula short, broad with a rounded lingual extremity; a sharp and abrupt lingual transverse crest, two and an additional marginal foramina are present on lingual root face
Original diagnosis after Begat, Kriwet, Gelfo, Cavalli, Schultz & Martin, 2023 [31518]: A species of Ptychotrygon characterized by three well-developed transverse crests on the oral tooth crown, the median transverse crest being the best-developed; a well-developed, sharp, and erected central cusp may be present; apron well-developed, rounded, bearing small ridges; lingual uvula short, broad with a rounded lingual extremity; a sharp and abrupt lingual transverse crest, two and an additional marginal foramina are present on lingual root face
Remarks
shark-references Species-ID=16429;
shark-references Species-ID=16429;
References
Novel perspectives on Late Cretaceous elasmobranch diversity in the Southern Hemisphere high latitudes. Paläontologische Zeitschrift, 100, 67–90
DOI: 10.1007/s12542-025-00751-y
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
Novel perspectives on Late Cretaceous elasmobranch diversity in the Southern Hemisphere high latitudes. Paläontologische Zeitschrift, 100, 67–90
DOI: 10.1007/s12542-025-00751-y
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
