"Trionyx" singularis

Extinct species of prehistoric freshwaer softshell turtle "Trionyx" singularis 66 63.3 Early Danian Palaeotrionyx singularis.jpg Life restoration yes 2 "Trionyx" singularis (Hay, 1907) * Aspideretes singularis Hay, 1907 Aspideretes puercensis Hay, 1908 Aspideretes sagatus Hay, 1908 "Trionyx" singularis is an extinct species of prehistoric softshell turtle that inhabited freshwater habitats in interior western North America during the Early Paleocene.Hay Oliver Perry https://books.google.com/books?id=G19YAAAAYAAJ The Fossil Turtles of North America 1908 Carnegie Institution of Washington en It is known from the Nacimiento Formation & Denver Formation of New Mexico & Colorado, USA. It lived during the Puercan (66 to 63.3 million years ago) faunal stage, only shortly after the Cretaceous-Paleogene extinction event.PBDB Taxon https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=105406 2024-10-27 paleobiodb.orgVitek Natasha S. Joyce Walter G. 2015 A Review of the Fossil Record of New World Turtles of the Clade Pan-Trionychidae http://www.bioone.org/doi/10.3374/014.056.0204 Bulletin of the Peabody Museum of Natural History en 56 2 185–244 10.3374/014.056.0204 0079-032X subscription It is one of a number of fossil softshell turtle species that is tentatively classified to the former wastebasket taxon genus Trionyx. It was initially described as Aspideretes singularis, and has also been previously placed in the genus Palaeotrionyx, but is presently just placed as "Trionyx". Remains are common in the San Juan Basin of New Mexico, and have previously been assigned to a number of species that are now considered synonymous with "T." singularis. References Q131143789 S Category:Paleocene turtles Category:Cenozoic turtles of North America Category:Fossils of the United States Category:Danian species Category:Taxa named by Oliver Perry Hay Category:Fossil taxa described in 1907 Category:Articles with quotation marks in the title