Descriptions of new species of Crinoidea, &c., from the Palaeozoic rocks of Illinois and some of the adjoining statesv. 17No. 3Academy of Natural Sciences143–155
Meek, F. B. and Worthen, A. H. 1865. "Descriptions of new species of Crinoidea, &c., from the Palaeozoic rocks of Illinois and some of the adjoining states." Proceedings of the Academy of Natural Sciences of Philadelphia, 17, (3) 143–155.