Temporal range: Late Cretaceous, 89–70 Ma
The American journal of science (1905) (17965935589).jpg
Ctenochelys stenoporus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Family: Ctenochelyidae
Genus: Ctenochelys
Sternberg, 1904
Type species
C. stenoporus
  • C. stenoporus
  • C. acris

Ctenochelys is an extinct genus of marine turtle (Cryptodira, Pancheloniidae), which existed during the Cretaceous period, and lived in the shallow waters of the Western Interior Seaway.[1] Its fossils have been found in the Ripley Formation and Mooreville Chalk of central Alabama, United States.[2] It was first named by C.H. Sternberg in 1904,[3] and contains two species, C. stenoporus[4] and C. acris.[5]


Ctenochelys stenoporus skeletons
Ctenochelys stenoporus skeletons


  1. ^ a b Kear BP, Lee MS (March 2006). "A primitive protostegid from Australia and early sea turtle evolution". Biol. Lett. 2 (1): 116–9. doi:10.1098/rsbl.2005.0406. PMC 1617175. PMID 17148342.
  2. ^ "Gary Kobylski, New Chair of MO–15 Board and State Conservationist in Alabama - Section "Things other than Dirt!"" (PDF). Charles Love, The Coastal Plainer. Fall 2005. Archived from the original (PDF) on 2009-03-20. Retrieved 2008-07-01.
  3. ^ a b "Marine Turtles". Mike Everhart. 2004. Archived from the original on 2013-12-25. Retrieved 2008-07-01.
  4. ^ Matzke AT (2007). "An almost complete juvenile specimen of the Cheloniid turtle Ctenochelys Stenoporus (Hay, 1905) From the Upper Cretaceous Niobrara formation of Kansas, USA". Palaeontology. 50 (3): 669–91. doi:10.1111/j.1475-4983.2007.00650.x.
  5. ^ Zangerl R (1953). "The vertebrate fauna of the Selma Formation of Alabama. Part IV. The turtles of the family Toxochelyidae". Fieldiana Geology Memoirs: 137–277.
  6. ^ Gentry AD (2016). "New material of the Late Cretaceous marine turtle Ctenochelys acris Zangerl, 1953 and a phylogenetic reassessment of the 'toxochelyid'-grade taxa". Journal of Systematic Palaeontology. 15 (8): 675–696. doi:10.1080/14772019.2016.1217087. S2CID 88758027.