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†Unarkaspis Elliott 1983
urn:lsid:organismnames.com:name:375729
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†Unarkaspis Elliott 1983
Elliott 1983. New Pteraspididae (Agnatha, Heterostraci) from the Lower Devonian of Northwest Territories, Canada. Journal of Vertebrate Paleontology, 2(4) 1983: 389-406