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Unformatted text preview: Marella . These animals were small, and exhibited the jointed appendages characterizing the arthropods. These delicat looking arthropods are referred to as "lace crabs". The quality of preservation of these fossils is quite extraordinary. On many specimens dark stains are interpreted as body fluids that have leaked from the specimen after burial. Trilobites , a dominant Cambrian animal, lso occur in the Burgess Shale in abundance. Trilobites are an extinct group of arthropods that were most dominant in the Cambrain before finally becoming extinct at the close of the Paleozoic. Like Marella and other arthropods, trilobites have a hard exoskeleton (that enhanced the chances of fossilization) and numerous jointed appendages. In the trilobite shown, details of the appendages are not clear....
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- Fall '10
- Biology, Cambrian, Burgess Shale, Burgess Shale Fauna