Species: darrowi WILLIS, MURRAY & MEGIRIAN, 1990
Etymology:

Holotype: NTM P8695-8

Locality: Blast Site, Bullock Creek, Camfield Beds, located '16 miles southeast of Camfield Homestead in north central Northern Territory, Northwestern Queensland State, Australia.

Horizon:

Biostratigraphy:

Age: Middle Miocene Epoch, Lower Neogene Period, Upper Tertiary Subera, Middle Cenozoic Era.

Material: Nearly complete skull missing the skull roof, frontals, parietals, postorbital and squamosals and basicranium.

Paratype:

NTM P87103-11: Left squamosal, quadrate and opisthotic of a juvenile.

Referred material:

NTM P87103-12: Right maxilla of a juvenile.

NTM P8697-2: Right jugal.

Paratypes:

Locality: D-Site, Riversleigh, Northwestern Queensland State, Australia.

Horizon:

Biostratigraphy:

Age: Upper Oligocene Epoch, Upper Paleogene Period, Upper Tertiary Subera, Middle Cenozoic.

Material:

NTM P8778: Right posterior mandible fragment, right posterior skull fragment preserving the lateral temporal fenstra, right pterygoid, ectopterygoid and posterior region of maxilla.

NTM P8681-14: Left mandible lacking the articular and adjacent angular and surangular posterior to the lateral foramen and a small portion of the dentary at the level of the third tooth.

NTM P8738-1: Right jugal, pterygoid, ectopterygoid and posterior maxilla and an associated dentary fragment.

QM F16822: Premaxilla and anterior portion of left maxilla retaining 14 teeth.

Referred material:

QM F16823: Jugal fragment.

QM F16824: Premaxillary fragment.

QM F16825, F16826: Right dentary.

Paratype:

SAM P27866

Locality: Pancake Site, Riversleigh, Northern Queensland State, Australia.

Horizon:

Biostratigraphy:

Age: Upper Oligocene Epoch, Upper Paleogene Period, Upper Tertiary Subera, Middle Cenozoic.
.
Material: Right premaxilla.

QM F16826

Locality: Site Y, Bullock Creek, Northern Queensland State, Australia.

Horizon:

Biostratigraphy:

Age: Middle Miocene Epoch, Lower Neogene Period, Upper Tertiary Subera, Middle Cenozoic Era.

Material: Right mandible fragments.

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Species: wickeni WILLIS, 1997
Etymology: In honor of Tony Wicken, University of NSW, for supportin the Riversleigh Reseach Project.

Holotype: QMF16822

Locality: Site D, Riversleigh World Heritage Area, Northwestern Queensland, Australia.

Horizon: System D.

Biostratigraphy: Riversleigh Faunal Zone A.

Age: Late Oligocene Epoch, Upper Paleogene Period, Lower Tertiary Sub-era, Early Cenozoic Era.

Material: Associated posterior cervical and lumbar vertebrae and a calcancum.

Paratypes:

QMF31079: Anterior portionof mandibles.

QMF16823: Jugal fragment.

QMF16724: Premaxillary fragmetns.

QMF16825: Right denary.

QMF16727: Right dentary.

NTM P8738-1: Posterior right skull fragmetn and associated right anterior dentary fragment.

NTMP8681-24: Left mandible lacking the articular and adjacent angular and surangular posterior to the lateral foramen and a small portion of the detnary at teh level of the third tooth.

NTM P8738-1: Right jugal, pteryoigd, ectopterygoid and posterior maxilla and assocaited dentary fragment.

Locality: White Hunter Site, Riversleigh World Heritage Area, Northwestern Queensland, Australia.

Horizon:

Biostratigraphy: Riversleigh Faunal Zone A.

Age: Late Oligocene Epoch, Upper Paleogene Period, Lower Tertiary Sub-era, Early Cenozoic Era.

Material:

QMF31071, 31072: Posterior portion of large mandibles.

QMF31073: Anterior dentary fragment.