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†Helaspis Elliott, Dineley & Johnson 2000
urn:lsid:organismnames.com:name:1451115
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124
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†Helaspis Elliott, Dineley & Johnson 2000
Elliott, Dineley & Johnson 2000. A vertebrate fauna from the Middle Devonian Yahatinda Formation of southwestern Canada. Journal of Paleontology, 74(1), Jan 2000: 123-132