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Suppose the yellow layer is sedimentary rock formed from marine sediments from the Cambrian period (542-488 mya). What types of fossils would you find in this layer?A.) only microfossils of single-celled organismsB.) only microfossils of anaerobic organismsC.) fossil animal forms representing early ancestors of all modern animal phyla, such as annelids, chordates, cnidarians (jellyfish), and mollusksD.) fossil animal forms representing all modern animal orders, such as tetrapods, amniotes (mammals, birds and reptiles), cephalopods (octopuses) gastropods(snails and slugs), and chondrichthyes (cartilaginous fish)
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