chasmataspidid

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English[edit]

Noun[edit]

chasmataspidid (plural chasmataspidids)

  1. (zoology) Any of the Chasmataspidida, an extinct group of chelicerate arthropods.
    • 2015 September 1, James C. Lamsdell et al., “The oldest described eurypterid: a giant Middle Ordovician (Darriwilian) megalograptid from the Winneshiek Lagerstätte of Iowa”, in BMC Evolutionary Biology‎[1], volume 15, →DOI:
      The sixth prosomal appendage is modified in both xiphosurids and chasmataspidids for use in locomotion or burrowing.
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