Genus: Eccasaurus BROOM, 1909
Etymology: In reference to the Ecca series of deposits near Prince Albert, South Africa, where the crushed humerus was found and Greek, sauros, "lizard."

Species: priscus BROOM, 1909
Etymology: Latin, priscus, "ancient."

Holotype: SAM-PK-915

Locality: Sandvlakte, Prince Albert, Western Cape Province, South Africa.

Horizon:

Biostratigraphy:

Age: Late Permian.
Note: Originally described as coming from the Ecca series; there is, however, a possibility that it came from the Tapinocephalus zone, Late Permian.

Material: Humerus, 2 imperfect femora, fibula, distal end of tibia, occipital fragment, tooth, nine weathered vertebrae, rib fragments, nine additional badly preserved fragments.

Referred material:

BOONSTRA, 1955

Locality: Dikbome, Laingsburg, Western Cape Province, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Lower Tapinocephalus zone.

Age: Early Tatarian age, Guadelupian Stage, Middle Zeichstein Epoch, Middle Permian.

Material:

SAM 11597: Part of the right coracoscapula, incomplete humerus and ulna.

BROOM, 1912

Locality: Near Prince, Prince Albert District, South Africa.

Horizon: Middle Abrahamskraal Formation.

Biostratigraphy: Lower Tapinocephalus zone.

Age: Early Tatarian age, Guadelupian Stage, Middle Zeichstein Epoch, Middle Permian.

Material:

AMNH 5625: An isolated tooth.