Genus: Mesosuchus WATSON,1912
Etymology: Greek, mesos, "middle" and Greek, souchos, "crocodile."

Species: browni WATSON, 1912
Etymology: In honor of Alfred Brown.

Holotype: SAM-PK-5882

Locality: Unkown, along a road between Aliwal North and Lady Grey, Aliwal North, Eastern Cape Province, South Africa.

Horizon: Burgersdorp Formation, Tarkastad Subgroup, Beaufort Group, Karro Supergroup.

Biostratigraphy: Cynognathus Assemblage zone.

Age: Early Anisian Stage, lowermost Mid Triassic Epoch, Early to Middle Triassic.

Material: Crushed skull, premaxilla and maxilla of the left side, lower jaw, palate badly crushed, and more of the skull, almost the whole vertebral column from the head to the middle of tail, much of the right arm, pelvis is badly preserved, both ischia and most of the left hind leg.

Referred material:

SAM-PK-6046: An incomplete right maxilla, an articulated series of the last 10 presacrals, both sacrals, and first 6 caudals, partial forelimbs, left and right pelvic girdles, right hind limb, and elements of left tarsus.

SAM-PK-6536: A virtually complete skull and lower jaws, articulated cervical vertebrae and ribs, dorsal vertebrae and ribs, complete left scapulocoracoid and partial right scapula, interclavicle, clavicles, distal end of left humerus, and gastralia.

SAM-PK-7416: An articultaed vertebral column composed of the last dozen presacrals, both sacrals and at least the first 15 caudal vertebrae, fragments of right forelimb, pelvic girdle, complete right femur, right crus and partial left crus, and right and left tarsi and pedes.

HAUGHTON, 1921

Material: Fragmentary skeleton.

 

HAUGHTON

Locality: Commonage, Aliwal North, Eastern Cape Province, South Africa.

Horizon: Burgersdorp Formation, Tarkastad Subgroup.

Biostratigraphy: Cynognathus zone.

Age: Spathian Stage, uppermost Scythian Epoch to Anisian Stage, lowermost Mid Triassic Epoch, Early to Middle Triassic.

Material:

Number: Not given: Fragmentary skull and fragmentary skeleton.