The specimen consisted of two forms growing in an apparently random mix.

The specimen consists of a partial skeleton lacking the skull.

The holotype specimen consists of the remains of a small individual.

Other known specimens consist mainly of very fragmentary remains and scattered teeth.

The second specimen, collected in 1989, consists of a partial articulated skeleton and a skull.

The specimen consists of a partial skull, tail, hands, feet and ribcage.

The first specimen was collected in 1977 and consists of several ribs and vertebrae.

The second specimen, also described in the original paper, consists of the back end of another skeleton, including the hindlimbs.

The specimen consisting of a single well preserved wing, was considered lost after the death of Tillyard in 1937.

Some specimens consist of two corralites joined together.