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" The fossil record includes about 2100 species of crinoids and 800 species survive today
The life span for these three lakes was: over 17 million years for Lake Uinta
This is the largest Ammonite cast available on the web
Hell Creek
Thrinaxodon, cynodont, sculpture Oviraptor " The fossil record includesThrinaxodon (pronounced thrin AX ah DON) was a cat sized cynodont, an ancestor of the mammals, but not a mammal itself. Thrinaxodon was not a dinosaur. This therapsid lived during the late Triassic period, roughly 240 million years ago. Small holes in the snout bones suggest that it may have had whiskers, a mammalian characteristic. Its teeth were also similar to those of mammals. The skull was about 1. 5 inches long. Fossils have been found in South