The formation is exposed along the Pecos River as far south as Santa Rosa, New Mexico.

These include fragments of paracyclotosaurid fossils, possibly related to Stanocephalosaurus, and an unidentified capitosauroid.

Reptile fossils are more common and diverse than in the Holbrook Member and include erythrosuchids, other archosaurs, rauisuchians, and prolacertiforms.

[3] The formation has also yielded two incomplete skeletons of a large archosaur[4] and the primitive poposauroid Arizonasaurus babbitti.

[6] Some red beds previously mapped as Bernal Formation, particularly in its more northern and western exposures, are now thought to belong to the Anton Chico.