Chapter 12 . Paleozoic Life History: Invertebrates. Burgess Shale. Diorama of the environment and biota of the Phyllopod bed of the Burgess Shale, British Columbia, Canada. Burgess Shale Soft-Bodied Fossils . On August 30 and 31, 1909, Charles D. Walcott,
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Paleozoic Life History: Invertebrates
* a piece of armor covering
(4) it provides protection against predators
Mobile epifauna: gastropod, starfish
worm sediment-deposit feeder