Sphenosaurus Facts

Although once classified as a dinosaur, Sphenosaurus is now known to be a procolophonid reptile that lived during the Late Permian period in what is now Germany, long before the first dinosaurs appeared on Earth. This small prehistoric reptile belonged to a group of early reptiles that were among the most successful land animals of their time, surviving the great Permian extinction that wiped out most life on Earth.

Sphenosaurus was a compact, lizard-like creature measuring roughly 30 centimetres in length. Like other procolophonids, it had a sturdy build with short legs and a relatively broad skull. Its body was likely covered in small, overlapping scales that provided protection from predators and the elements. The creature's wedge-shaped skull, which gave it its name meaning 'wedge lizard', housed small teeth perfectly adapted for processing plant material.

This ancient reptile was herbivorous, feeding on the primitive plants available during the Late Permian period, including early conifers, ferns, and seed plants. Its jaw structure suggests it could efficiently crop vegetation and grind plant matter. Sphenosaurus lived in the terrestrial environments of ancient Europe, navigating through forests and open areas in search of suitable plant food.

The discovery and classification of Sphenosaurus highlights the complex history of palaeontology, where early fossil finds were often misclassified as our understanding of prehistoric life evolved. Originally named Palaeosaurus sternbergii in 1840, it required renaming when that genus name was found to already belong to other reptiles.