2014
DOI: 10.1139/cjes-2014-0012
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The mid-Cambrian (Series 3, Guzhangian; Marjuman) trilobite Deiracephalus Resser, 1935, from western Newfoundland

Abstract: Species of Deiracephalus Resser, 1935, are rare elements in most Guzhangian (upper Marjuman) trilobite faunas of Laurentian North America, and are characterized by striking cephalic spinosity that includes very long genal and occipital or preoccipital glabellar spines. Almost all previous reports of the genus have assigned sclerites to two species, Deiracephalus aster (Walcott, 1916) and Deiracephalus unicornis Palmer, 1962. However, new material from the Shallow Bay Formation of western Newfoundland and restu… Show more

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