characterized by two rows of large bony plates extending along its back and a tail armed with pairs of spines known as thagomizers

The name "Monolophosaurus" is derived from a distinctive feature of this dinosaur: a crest on the top of its skull

Its skull was long and low

It had a length of about 2 meters and a height at the hip of around 0

and which in life probably exceeded one meter

Eurhinosaurus longirostris Variant:Primed characterized by two rows ofEurhinosaurus longirostris was a specialized ichthyosaur from the Early Jurassic (Toarcian, ~183175 million years ago), widely distributed in European seas, especially in what is now Germany, France, and the United Kingdom. It represents one of the most unique morphologies within Ichthyosauria due to the extreme elongation of its upper jaw. Its most distinctive feature was its disproportionately long snout , in which the premaxilla projected far