THE AGLASPIDID ARTHROPOD BECKWITHIA FROM THE CAMBRIAN OF UTAH AND WISCONSIN
New specimens of Beckwithia typa, from the upper Middle Cambrian of Utah, show that, contrary to previous descriptions, the animal had at least 10 tergites (possibly 12) and probably a tail-spine. There is no evidence for a fused tail-plane, the one character that made Beckwithia appear anomalous wi...
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| Format: | Journal article |
| Language: | English |
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1989
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