Hadrianus (genus)
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Hadrianus Temporal range: 55.4–33.9Ma Eocene[1] | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Testudines |
Family: | Testudinidae |
Genus: | †Hadrianus Cope, 1872[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.[2] The genus is thought to be closely related to the genus Manouria.[2] The genus may have evolved in the subtropics of Asia and subsequently migrated to North America and Europe.[2]
References
- ↑ 1.0 1.1 1.2 http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=58498&is_real_user=1
- ↑ 2.0 2.1 2.2 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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