Bryozoans were collected from a thin shaley limestone in the lower part of the Bird Spring Formation in the northern part of the Muddy Mountains, Clark County, southern Nevada (Fig. 1). The purpose of this paper is to describe a new genus and two new species of these bryozoans. The fauna of the Bird Spring Formation has taken on a new importance with the formation's designation as the Global Boundary Stratotype Section and Point (GSSP) for the Mid-Carboniferous Boundary (Lane et al., 1999). Samples were collected from the bryozoan-bearing unit while teaching field camp during the...

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