Species: quadricuneata HOWIE, 1972
Etymology:

Holotype: QM F6471

Locality: The Crater, Rewan property, about 72 Km southwest of Rolleston, (Field locality L78 in QM records), SE Queensland State, Australia.

Horizon: Lower beds of the upper part of the Rewan Formation, Mimosa Group.

Biostratigraphy:

Age: Early Triassic.
Note: According to LEES, 1986 ‘Arcadia Formation, Rewan Group, Greisbachian-Dienerian, Induan stage,-Olenekian stage, upper Scythian Epoch, Early Triassic.

Material: Fragmentary skull and fragmentary skeleton.

Referred material:

AMF 54126: Fragmentary skull, vertebrae and ribs.

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Species: myriadens (WARREN & BLACK, 1985) SCHOCH & MILNER, 2000
= Arcadia myriadens WARREN & BLACK, 1985
Etymology:

Holotype: QMF 10121

Locality: Near the Headwaters of Duckworth Creek, South west of Bluff, South Central Queensland State, Australia.

Horizon: Lower Uppper Arcadia Formation, Rewan Group.

Biostratigraphy:

Age: Greisbachian-Dienerian, Induan stage,-Olenekian stage, upper Scythian Epoch, Early Triassic.

Material: Fragmentary skull, mandibles and a small quantity of postcranial material.