Segisaurus halli Camp, 1936

Age .?Sinemurian-Pliensbachian.

Occurrence. Navajo Sandstone, Arizona, USA.

Diagnosis. Large oval foramen in the pubic process of the ischium.

Remarks. Although the holotype and only known specimen of Segisaurus halli is rather fragmentary, the species is certainly valid, and has been of considerable interest since it contains the first clavicle that was described in any theropod dinosaur (Camp 1936).