Genusaurus

Genusaurus is a ceratosaur, a group of primitive carnivorous dinosaurs that were once thought to have died out in the Jurassic. This fossil shows they survived into the Early Cretaceous.2

Its shinbone (tibia) had an extremely large cnemial crest, a bony bump that stuck out in front. That's why it was named 'knee lizard'.12

The only known skeleton includes parts of the hip, thigh, shin, foot bones, and several back vertebrae. No skull has been found.2

The bones were found in marine rocks, mixed with oyster shells and shark teeth. The dinosaur probably died on land and its body washed into the sea.2

The environment at the time was warm and humid, with wooded countryside and conifer trees.2

Genusaurus was a small dinosaur, but scientists don't know its exact size because only a partial skeleton has been found.2