| Named By: | Edward Drinker Cope in 1873 |
| Time Period: | Late Cretaceous |
| Location: | Angola. Canada, Manitoba - Pierre Shale Formation, Vermilion River Formation. USA, Alabama - Mooreville Chalk Formation, Arkansas- Marlbrook Marl Formation, Delaware - Merchantville Formation, Kansas - Marlbrook Marl Formation, Niobrara Formation, South Dakota - Pierre Shale Formation, Tennessee - Ripley Formation |
| Size: | Up to about 2 meters long |
| Diet: | Uncertain/Carnivore |
| Fossil(s): | Partial remains of numerus individuals |
| Classification: | | Chordata | Reptilia | Testudines | Cryptodira | Panchelonioidea | |
Toxochelys (TOKS uh KEE leez) is an extinct genus of marine turtle from the Cretaceous period. It is the most commonly found fossilized turtle species in the Smoky Hill Chalk, in western Kansas. Toxochelys was about 2 m (6 ft) in length. There are five known species in the genus: Toxocheys bauri, Toxochelys browni, Toxochelys latiremus, Toxochelys weeks, and Toxochelys moorevillensis. Phylogenetic analysis shows that Toxochelys belong to an extinct lineage of turtles transitional between modern sea turtles and other turtles.