Named By: Edward Drinker Cope - 1875.
Classification: Chordata, Synapsida, Ophiacodontidae.
Species: C. collettii (type), C. limbatus, C. vinslovii.
Size: Detail unavailable.
Known locations: Canada, Nova Scotia. USA, Illinois - Bond Formation, Oklahoma - Garber Formation, Texas - Belle Plains Formation.
Time period: Artinskian of the Permian.
Fossil representation: Partial remains of several individuals.
Clepsydrops is a genus of ophiacodontid synapsid that lived in North America during the Early Permian. Clepsydrops is noted as being similar to the genus Archaeothyris, and like it, is thought to have been a predator of small animals. One former species of Clepsydrops, C. natalis, has now been re-described as a species of Dimetrodon.
- On fossil remains of Reptilia and fishes from Illinois. Proceedings of the Academy of Natural Sciences of Philadelphia 27(1):404-411. - Edward Drinker Cope - 1875.