Chesnut, D. R. J. & Ettensohn, F. R. 1988. Hombergian (Chesterian) echinoderm paleontology and paleoecology, south-central Kentucky. Bulletins of American Paleontology 95, 1-102.
175838
Chesnut, D. R. J.; Ettensohn, F. R.
1988
Hombergian (Chesterian) echinoderm paleontology and paleoecology, south-central Kentucky