Claim: Otsheria is in the Otsheridae family, within the Therapsida clade (a major group of eupelycosaurian synapsids), under the Chordata phylum.
Evidence: Family: †Otsheridae Clade: Therapsida Therapsida is a major group of eupelycosaurian synapsids that includes mammals and their ancestors. Phylum: Chordata