Hooking some stem-group βwormsβ: fossil
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Nicholas J. Butterfield
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Article
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2006
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John Wiley and Sons
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English
β 197 KB
## Abstract The fossil record plays a key role in reconstructing deep evolutionary relationships through its documentation of the early diverging stem groups leading to extant phyla. In the middle Cambrian Burgess Shale, two famously problematic worms, __Odontogriphus__ and __Wiwaxia__, have recent