A low-diversity crinoid fauna is described from the Fitchville Formation, Lower Mississippian (Late Devonian to Early Mississippian) of Utah County, Utah. Based on the crinoid fauna, composed of Nunnacrinus olsoni new species, Paracosmetocrinus lundi new species, and Platycrinites sp., this fauna is interpreted as being from the Kinderhookian, Upper Fitchville Formation. This occurrence of Nunnacrinus extends the geographic and facies range of this genus in western North America and the geographic range of Paracosmetocrinus within western North America.

You do not currently have access to this article.