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Article: Protaspides of Leiostegium and their implications for membership of the order Corynexochida

Publication: Palaeontology
Volume: 46
Part: 3
Publication Date: May 2003
Page(s): 431 445
Author(s): Dong-Chan Lee and Brian D. E. Chatterton
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How to Cite

LEE, D., CHATTERTON, B. D. E. 2003. Protaspides of Leiostegium and their implications for membership of the order Corynexochida. Palaeontology46, 3, 431–445.

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Abstract

Protaspid morphologies of Leiostegium sp. aff. L. formosum from the Lower Ordovician Garden City Formation, western United States strongly support the inclusion of the Leiostegiina in the order Corynexochida. A similar metaprotaspid morphotype is present in the three suborders of the Corynexochida, the Corynexochina, Leiostegiina, and Illaenina, supporting their corynexochid membership.
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