Abstract

Described are Walcottella wyomingensis, n. sp., from the Middle Cambrian Gros Ventre Formation of Wyoming. Indianites natronensis, n. sp., from the Upper Cambrian Boysen Formation of Wyoming, Lepiditta burinensis, n. sp., from the Middle Cambrian Kelligrew Brook Formation of Newfoundland, Acrotreta highgatensis, n. sp., and Billingsella minima, n. sp., and from the Upper Cambrian Gorge Formation of Vermont, and Tubulella terranovaensis, n. sp., Archaelafoea terranovaensis, n. sp., and a problematical fossil from the Middle Cambrian Kelligrew Brook Formation of Newfoundland.

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