Oryctodromeus

Graphic representation of Oryctodromeus

Oryctodromeus ( " grave forming runner" ) is a genus of small dinosaur ornithopoder, of which only the type species Oryctodromeus cubicularis (Latin cubiculum - bedroom) was scientifically described. The Latin species name indicates that the fossils of the species, an incompletely preserved adult specimen and two incomplete juveniles were apparently found in a self-dug earthworks.

The finds date from the early Late Cretaceous ( Cenomanian ) of the U.S. state of Montana.

Description

Oryctodromeus cubicularis was a medium-sized, two-legged dinosaur of about two meters in length, was allotted to the tail of a little over half. The weight was estimated at 22 to 32 kg. The front legs were stronger developed than in related species, and the pelvic and hind limb bones were well developed. The broad head wore a shovel-like snout. The sum of these characteristics included the discovery that the species was well adapted to digging in the earth.

Way of life

The remains of the species have been found in an earthwork which had a sloping, winding tunnels and enlarged Board at its end in about two meters deep. The course had a diameter of about 30 cm, which is just over the width of the adult animal. The discovery assume that the animal has dug the construction as a hiding place for his boy. The relative size of the pups designation refers to a longer duration of brood care. The earthworks could have served as a protection against adverse environmental conditions.

The type was probably herbivorous and could run fast because of the long hind legs at the surface.

System

Oryctodromeus belongs to the basal Euornithopoden and is probably closely related to the genera Orodromeus and Zephyrosaurus. Because of the similarities of the body structure between these animals, it is assumed that all of these species for digging burrows for food and were capable of. The classification in a family was not made.