Caseoides

{{Short description|Extinct genus of synapsids}}

{{Speciesbox

| fossil_range = {{fossilrange|Kungurian|Kungurian|Kungurian}}

| genus = Caseoides

| parent_authority = Olson and Beerbower, 1953

| species = sanangeloensis

| authority = Olson and Beerbower, 1953

}}

Caseoides is an extinct genus of large caseid synapsids that lived in the Kungurian Age (late Early Permian epoch). It was about {{convert|3|m}} long, and like many other caseids, it was herbivorous and aquatic. It weighed between {{convert|150|and|200|kg}}. Its fossils were found in San Angelo Formation, Texas.{{cite journal | last1= Olson | first1 = Everett C. | last2 = Beerbower | first2 = James R. | year = 1953 | title = The San Angelo Formation, Permian of Texas, and Its Vertebrates | journal = The Journal of Geology | volume = 61 | issue= 5 | pages = 389–423 | doi = 10.1086/626109 | bibcode = 1953JG.....61..389O }} Caseoides was very similar to Casea, 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 Casea lineage. Its relatives became smaller during the Roadian Age. Only poorly preserved postcranial material is known including limbs.{{cite journal | last1 = Ronchi | first1 = Ausonio | last2 = Sacchi | first2 = Eva | last3 = Romano | first3 = Marco | last4 = Nicosia | first4 = Umberto | year = 2011 | title = A Huge Caseid Pelycosaur from North-Western Sardinia and Its Bearing on European Permian Stratigraphy and Palaeobiogeography | journal = Acta Palaeontologica Polonica | volume = 56 | issue =4 | pages =723–738 | doi = 10.4202/app.2010.0087 |doi-access=free | s2cid = 55085495 }}