The Cambrian Period
Beginning of paper
During a lot of things happened both geologically
and biologically. The Cambrian Period was the first period of the Paleozoic
Era, it lasted from 570 million years ago to 500 million years ago, 70 million
years. It¹s very important because it corresponds with the firs t appearance of
abundant ....
Middle of paper
.... was a large inland sea called the Saulk sea. Inhabiting this sea, and
the other seas of the primitive world, were Trilobites and Brachiopods .
Trilobites were three - lobed arthropods, unlike other arthropods Trilobites
had primitive ,unspecialized appendages. Brachiopods are simple bi- valve
shellfish that resemble clams. During the Cambrian corals and chrinoids
emerged. Chrinoids are sea animals of the class chrinoidea like the sea lily
and the feather star. The ....
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Page count: 1 (approximately 250 words per page)
