Hadrianus (genus) References Navigation menu"Fossilworks: Hadrianus"e5849848187231367012expanding ite
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Fossil taxa of EuropeHadrianusEocene reptiles of North AmericaPrehistoric turtle generaTaxa named by Edward Drinker CopePrehistoric turtle stubs
extinctgenustortoiseTestudinidaeUnited StatesSpain
Hadrianus Temporal range: 55.4–33.9 Ma PreЄ Є O S D C P T J K Pg N | |
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Hadrianus majusculus | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Testudines |
Suborder: | Cryptodira |
Clade: | Polycryptodira |
Superfamily: | Testudinoidea |
(unranked): | †Pantestudinidae |
Genus: | †Hadrianus Cope, 1872[2][1] |
Species | |
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Hadrianus is an extinct genus of tortoise belonging to the Testudinidae[1] found in the United States and Spain and believed to be the oldest true tortoise known.[3] The genus is thought to be closely related to the genus Manouria.[3] The genus may have evolved in the subtropics of Asia and subsequently migrated to North America and Europe.[3]
References
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^ E. D. Cope. 1872. Second account of new Vertebrata from the Bridger Eocene. Proceedings of the American Philosophical Society (separate) 1-3
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Ehret, Dana Joseph 2004 "Skeletochronology as a method of aging Oligocene Gopherus laticuneus and Stylemys nebrascensis, using Gopherus polyphemus as a modern analog" Thesis, University of Florida.
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