GLGY 307 Lecture Notes - Lecture 16: Cenozoic, Rugosa, Tabulata
26 Dec 2017
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Document Summary
Burgess shale discovery: burgess shale fossils were discovered by walcott at the very beginning of the xxth century in british columbia. It is on e of the most important fossiliferous points all over the world. Sedimentary environment: the fossils of burgess shale were buried along the continental slope and at the slope base, rapid burial, the fossils of burgess shale are found mostly in the dark-colour sediments, anoxic conditions. A reconstruction of the burgess shale biotope: the burgess shale middle cambrian fauna consists of a variety of known and unknown phyla. The first fossil fish: an extraordinary discovery came in the 1990s from the early cambian fossiliferous beds from the chengiang province of china, myllokunmingia represents not only the first fossil fish but also the first known vertebrate. Echmatocrinus: 2. 5 cm wide just below the tentacles, originally it was assigned to the crinoids (echinoderms, later it was shown that it could be an tetracoral.
