Douglas J. Eernisse
R. D. Hoare
M. D. Henderson
J. Pojeta Jr.
2003
<p><i><span class="italic">Echinochiton dufoei</span></i><span> new genus and species is described from the Ordovician age Forreston Member, Grand Detour Formation (Blackriveran) near Beloit, Wisconsin. For a variety of reasons, we regard </span><span class="italic">E. dufoei</span><span> as a chiton; the species is known from four articulated or partially articulated specimens, one of which has eight plates and two of which have a mucro on the tail plate. </span><span class="italic">Echinochiton dufoei</span><span> differs from other chitons in having large hollow spines that project from each of the known plates. In plate shape and position, </span><i><span class="italic">E. dufoei</span></i><span> is much like the Upper Cambrian species </span><span class="italic">Matthevia variabilis</span><span> Walcott, 1885, and the Lower Ordovician species </span><span class="italic">Chelodes whitehousei</span><span> Runnegar, Pojeta, Taylor, and Collins (1979).</span></p>
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10.1017/S0022336000044395
en
Cambridge University Press
Echinochiton dufoei, a new spiny Ordovician chiton
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