Abstract
Retiolitid graptolites are a very common component in Silurian graptolite faunas of the Canadian Arctic, both in flattened form on shale surfaces and in uncompressed form in limestone concretions found in the enclosing shales (Lenz and Melchin, 1987). Upper Wenlock and Ludlow rocks are particularly prolific, having yielded about 20 species of retiolitids to date. One of the collections made during the summer of 1991 was a single piece of talus-derived shale containing 10 complete and slightly fragmented retiolitids. These specimens are morphologically unique, and their description is the purpose of this note.
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