Aepyprymnus agilis Skull Replica measures 3.2 inches. Aepyprymnus agilis Skull Replica is museum quality polyurethane cast. 2-part skull (separate cranium and jaw). Made in USA. Cast of original California Academy of Sciences specimen. Known as Rufous Rat Kangaroo.

Rufous Rat Kangaroo or Rufous Bettong are small rodents of genus Dipodomys, are native to western North America. They are a small, jumping, rat-like marsupial native to eastern Australia.

It is the only species in the genus Aepyprymnus. The largest member of the potoroo/bettong family (Potoroidae), it is about the size of a rabbit.

The skull of Aepyprymnus agilis is short and broad compared to other potoroids. The frontal bone articulates with the squamosal region of the temporal bone, and the angular process forms a prominent shelf.

Palatine fenestration varies within the species, however fenestrae are remarkably smaller or absent in the A. rufescens.

Aepyprymnus agilis has a dental formula 3/1, 1/0, 1/1, 4/4. The first upper incisors are long, sharp, and blade-like. The second and third upper incisors are smaller and laterally displaced.

The first lower incisors project forward from the dentary. Diastemae are present but reduced, and canines appear in the upper jaw. The molars erupt at approximately the same time.

The Aepyprymnus agilis is active at night when it digs for plant roots and fungi, and like other marsupials it carries its young in a pouch. Though its range is reduced, the population is healthy and stable.

It is generally grey with a hint of reddish brown and its scientific name means “reddish high-rump”.

It was once thought of as a solitary, nocturnal animal, but recent observation indicates that the Rufous rat kangaroo may form loose, polygynous associations. It feeds mostly on tubers and fungi, but also on leaves and other vegetation.

The Aepyprymnus agilis is distinguished by the ruffled and bristly hair of the pelage and rufous tint of the fur at the upper parts.

The hair across the back is predominantly grey, the rufous tinge more evident, and is interspersed with silvery hairs.

An indistinct stripe appears at the hip line. The underparts are also grey, although paler. The combined head and body length is 385 to 390 millimetres.

The Aepyprymnus agilis tail may be from 340 to 390 mm in length, and excepting a white tip that may appear the color is overall grey-brown. The ears are comparatively long, 48 to 57 mm, with a triangular form.

The color of the ears is very dark at the outer side and pink at the interior, the fringe is lined with silver hairs. A hairless pink rim appears around the eye. The A. rufescens weight range is from 2.5 to 3.5 kilograms.

They thrive in grassy woodlands, coastal eucalypt forests, wet sclerophyll, and in low dry open woodlands with grassy understorey. All A. rufescens build conical-shaped nests that have one entrance.

Nests can be found in the hollows of fallen trees, under bushes, in grass clumps, or more rarely on open ground.

Aepyprymnus agilis use materials such as grass, hay, straw, dry ferns, and fibrous vegetation to build their nests. They pick this material up with their forepaws and pass it down the body to the tail which places the material in the nest.

They can move at high speeds over short distances, bounding solely on its hindlegs and using its forelegs to aid in turning. This bipedal hop is mostly seen when the animal is traveling between feeding areas or in times of alarm.