Segnosaurus

slow lizard

• segnis · Latin · slow, slothful
• sauros · Greek · lizard

The name combines the Latin "segnis" (slow) with the Greek "sauros" (lizard). It was chosen because the animal was thought to have been a slow-moving, sluggish creature, based on its robust hind limb anatomy. The fossils come from Mongolia and it is the namesake of the Segnosauria, an old name for the therizinosaurs.

Named by

Perle

Year named

1979

Period

Late Cretaceous

Stages

Cenomanian – Turonian

Found in

Bayanshiree Formation, Gobi Desert, Mongolia

Segnosaurus galbinensis is the type species. It is a therizinosaur, a group of bizarre, long-clawed, probably herbivorous theropods. The exact age of the Bayanshiree Formation is debated, so the stage range here is approximate.