Data from: A large new leanchoiliid from the Burgess Shale and the influence of inapplicable states on stem arthropod phylogeny

C├ędric Aria, Jean-Bernard Caron & Robert Gaines
Characterized by atypical frontalmost appendages, leanchoiliids are early arthropods whose phylogenetic placement has been much debated. Morphological interpretations have differed, some of which concern critical characters such as the number of eyes and head appendages, but methodological approaches also have diverged. Here, we describe a new leanchoiliid, Yawunik kootenayi gen. et sp. nov., based on 42 specimens from the newly discovered Marble Canyon locality of the Burgess Shale (Kootenay National Park, British Columbia; middle Cambrian)....

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  • Pomona College
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  • Royal Ontario Museum
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  • University of Toronto
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