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Naomichelys
Extinct genus of turtles From Wikipedia, the free encyclopedia
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Naomichelys is an extinct genus of helochelydrid stem turtle known from the Cretaceous (Aptian-Campanian) of North America. It is the only member of the family known to be native to North America.
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Distribution
Naomichelys is known numerous remains from western North America, most notably the holotype partial shell from the Cloverly Formation of Montana and a complete skeleton from the Antlers Formation of Texas. Indeterminate remains are known extending up to the Campanian in the United States and Canada.[1] It is the only known North American member of Helochelydridae.[2][3]
Location
After[1]
- Kootenai Formation, Montana, Early Cretaceous (Aptian)
- Arundel Formation, Maryland, Aptian
- Cloverly Formation, Montana and Wyoming, Aptian
- Trinity Group, Texas, Aptian-Albian
- Willow Tank Formation, Nevada, Albian
- Cedar Mountain Formation, Utah, Albian-Cenomanian
- Kaskapau Formation, British Columbia, Turonian
- Straight Cliffs Formation, Utah, Turonian-Santonian
- Tropic Shale, Utah, Turonian-Santonian
- Mooreville Chalk, Alabama, Santonian-Campanian
- Milk River Formation, Alberta, Santonian-Campanian
- Foremost Formation, Campanian
- Two Medicine Formation, Montana, Campanian
- Mesaverde Formation, Wyoming, Campanian
- Wahweap Formation, Utah, Campanian
- Menefee Formation, New Mexico Campanian
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Taxonomy
Naomichelys is a member of the family Helochelydridae, which is known from Late Jurassic to Late Cretaceous deposits in North America and Europe.
References
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