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Baenidae
Baenidae is an extinct family of paracryptodiran turtles known from the Early Cretaceous to Eocene of North America. While during the Early Cretaceous they are found across North America, during the Late Cretaceous they are only found in Laramidia, having disappeared from Appalachia. The majority of lineages survived the K-Pg Extinction, but the family was extinct by the latest Eocene. The name of the type genus, '' Baena,'' appears to be of Native American origin, likely from the Arapaho ''be’enoo''. They are primarily found in freshwater deposits, and are considered to be aquatic, with a largely generalist habit. Genera * †'' Arundelemys'' * †'' Arvinachelys'' * †'' Baena'' * †'' Cedrobaena'' * †'' Chisternon'' * †'' Edowa'' * †'' Gamerabaena'' * †'' Gehennachelys'' * †'' Hayemys'' * †''Lakotemys'' Lakota Formation, Berriasian-Valanginian In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palatobaena
''Palatobaena'' is an extinct genus of Baenidae, baenid turtle. It was first named by Gaffney in 1972 and the type species is ''Palatobaena bairdi''. It based on a fragmentary skull from the Fort Union Formation of the Bighorn Basin of Wyoming. The two other species are ''P. gaffneyi'' (a complete skull from Eocene (Wasatchian North American Land Mammal Age)) and ''P. cohen'' which existed in Hell Creek Formation, North Dakota during the late Cretaceous period (Maastrichtian age). References Baenidae Prehistoric turtle genera Late Cretaceous turtles Paleocene turtles Eocene turtles Prehistoric turtles of North America Hell Creek fauna Fossil taxa described in 1972 Taxa named by Eugene S. Gaffney {{paleo-turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamerabaena
''Gamerabaena'' is an extinct genus of baenid turtle which existed in North Dakota during the late Cretaceous Period. It is known from a single fragmentary skull that was found in the Maastrichtian-age Hell Creek Formation. It contains the species ''Gamerabaena sonsalla''. ''Gamerabaena'' is similar to the genus '' Palatobaena'', but it differs in its lack of a posterior expansion of the triturating (or chewing) surface, a somewhat rectangular skull, and a wide angle between the maxillae. ''Gamerabaena'' also has a lingual ridge on the inner side of the jaw that is not seen in ''Palatobaena''. ''Gamerabaena'' is considered the sister taxon of ''Palatobaena'' and shares features with both ''Palatobaena'' and '' Plesiobaena''. These features, which include slightly upturned eye sockets, are seen as intermediate between the two other genera. While ''Gamerabaena'' is known only from the skull, it may belong to the same species as ''"Baena" hayi'', which is known primarily from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neurankylus
''Neurankylus'' is an extinct genus of turtles in the family Baenidae that lived between 112 and 61 million years ago in Canada and the United States. It was originally placed within the monotypic family Neurankylidae, but it has since been placed in the Neurankylinae, alongside '' Trinitichelys''. The type species, ''Neurankylus eximius'', was described by Lawrence Lambe in 1902. The species ''N. lithographicus'' was discovered in the Milk River Formation (Canada), alongside the holotype of the pachycephalosaurid dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ... '' Acrotholus audeti''. References {{Taxonbar, from1=Q73170070 Baenidae Cretaceous turtles Paleocene turtles Cretaceous reptiles of North America Paleocene reptiles of North America Hell Creek fauna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arvinachelys
''Arvinachelys goldeni'' is an extinct baenid turtle from the Late Cretaceous of Utah. ''A. goldeni'' is notable among turtles for the presence of two nasal openings instead of one, giving it a vaguely pig-nosed appearance in life. Description The holotype, UMNH VP 21151, is a largely completed skeleton, including the shell and skull, belonging to an animal about 60 centimeters long. Remains previously ascribed to other baenid turtles are now recognised to belong to the animal. Phylogenetics ''Arvinachelys'' bears most of the synapomorphies characteristic of Baenidae. It is described as a sister taxon to '' Hayemys''; given the latter's position as a lazarus taxon basal to the rest of Baenidae, ''Arvinachelys''' discovery extends its branch of the family tree back into the Campanian. However, ''Arvinachelys''' discovery may indicate that a reevaluation of Baenidae as a whole is necessary, as several remains from the region have been reassigned to this genus. Biology ''Arvinac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedrobaena
''Cedrobaena'' is an extinct genus of turtle which existed in the Tiffanian Cedar Point Quarry, Wyoming and in the latest Maastrichtian Hell Creek Formation, United States. It was first named by Tyler R. Lyson and Walter G. Joyce in 2009 and the type species is ''Cedrobaena putorius''. References * ''Cedrobaena''at the Paleobiology Database The Paleobiology Database (PBDB) is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database originated in the NCEAS-funded Phanerozoic Marine Pale ... Baenidae Prehistoric turtle genera Late Cretaceous turtles of North America Paleocene turtles Cenozoic turtles of North America Hell Creek fauna Fossil taxa described in 2009 {{paleo-turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baena (turtle)
''Baena'' (pronounced ''ba-en-na'') is an extinct genus of baenid turtles that inhabited North America during the Late Cretaceous and early Paleogene The Paleogene Period ( ; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period Ma (million years ago) to the beginning of the Neogene Period Ma. It is the fir .... The genus name is thought to originate from a Indigenous languages of the Americas, Native American language, possibly the Arapaho language, Arapaho word for turtle, ''be’enoo''. Fossils of ''Baena'' have been found in locations including Kirtland Formation, Campanian New Mexico (''B.'' sp.) (Cretaceous) and Ravenscrag Formation, Maastrichtian Canada (''B.'' sp.) (Cretaceous). References Baenidae Prehistoric turtle genera {{Paleo-turtle-stub Late Cretaceous turtles of North America Cenozoic turtles of North America Paleogene turtles Taxa named by Joseph Leidy Fossil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |