1. Trends in athyridide diversity dynamics.;Alvarez F.;The Systematics Association,2001
2. Middle Pennsylvanian fossils from Indian Springs, Nevada.;Beus S.S.;Journal of Paleontology,1969
3. Pennsylvanian and Permian fusulinids of the Bird Spring Group from Arrow Canyon, Clark County, Nevada.;Cassity P.E.;Journal of Paleontology,1966
4. Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America.;Cecil C.B.;SEPM Special Publication,2003
5. Variation in stomatal density in the Late Carboniferous gymnosperm frond;Cleal C.J.;Neuropteris ovata. Palaios,1999