Cambrian Creatures Gallery: Photos of Primitive Sea Life The Cambrian also saw the rise of larger creatures, such as this ancient shrimplike creatures called anomalocaridids had long, which had spiny head limbs for catching prey
Albertonectes in the Bearpaw Sea Around 74 million years ago, Albertonectes was the ultimate "stretch-limo" of a group of prehistoric reptiles called plesiosaurs. It hunted fish with a neck possessing over ten times as many vertebrae as ours!
Sivatherium is an extinct genus of giraffid that ranged thru Africa to Indian subcontinent. It may have become extinct only years ago, as there are ancient rock paintings in the Sahara Desert that greatly resemble it.