''Caseoides'' is an extinct genus of large

caseid Caseidae are an extinct family of basal synapsids that lived from the Late Carboniferous to Middle Permian between about 300 and 265 million years ago. Fossils of these animals come from the south-central part of the United States (Texas, Oklah ...

synapsid Synapsids + (, 'arch') > () "having a fused arch"; synonymous with ''theropsids'' (Greek, "beast-face") are one of the two major groups of animals that evolved from basal amniotes, the other being the sauropsids, the group that includes rep ...

s that lived in the

Kungurian In the geologic timescale, the Kungurian is an age or stage of the Permian. It is the latest or upper of four subdivisions of the Cisuralian Epoch or Series. The Kungurian lasted between and million years ago (Ma). It was preceded by the Art ...

Age (late Early Permian epoch). It was about long, and like many other caseids, it was

herbivorous A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthpart ...

and aquatic. It weighed between . Its fossils were found in San Angelo Formation,

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

. ''Caseoides'' was very similar to ''

Casea ''Casea'' is a genus of herbivorous caseid synapsids that lived during the late Lower Permian (Kungurian) in what is now Texas, United States. The genus is only represented by its type species, ''Casea broilii'', named by Samuel Wendell Willisto ...

'', but was slightly larger in size. ''Caseoides'' was a heavily built creature, as are most of the Caseids (except '' Caseopsis''). In the development of its proportionally thick, stout limbs it represents the culmination of the ''

'' lineage. Its relatives became smaller in size during the

Roadian In the geologic timescale, the Roadian is an age or stage of the Permian. It is the earliest or lower of three subdivisions of the Guadalupian Epoch or Series. The Roadian lasted between and million years ago (Ma). It was preceded by the K ...

Age. Only poorly preserved postcranial material is known including limbs.

References

Caseasaurs Prehistoric synapsid genera Cisuralian synapsids of North America Taxa named by Everett C. Olson Fossil taxa described in 1953 Kungurian genus first appearances Kungurian genus extinctions {{Paleo-synapsid-stub

See also

References