Onychocrinus

Ang Onychocrinus ay isang nalipol na genus ng mga crinoid.

 Mga tala ng posil o labimbakas 
Ang genus na ito ay kilala sa mga tala ng labimbakas ng panahong Karbonipero sa Estados Unidos at Kanada (saklaw ng edad: 353.8 hanggang 318.1 milyong taon na ang nakalilipas). 

 Bibliograpiya 

 F. Springer. 1906. Discovery of the Disk of Onychocrinus, and Further Remarks on the Crinoidea Flexibilia. The Journal of Geology, Volume 14.
 A. S. Horowitz. 1956. Fauna of Glen Dean Limestone (Chester) in Indiana and Northern Kentucky. unpublished Ph.D. thesis, Indiana University 1-449
 N. G. Lane, J. L. Matthews, E. G. Driscoll and E. L. Yochelson. 1973. Paleontology and paleoecology of the Crawfordsville fossil site (Upper Osagian: Indiana). University of California Publications in Geological Sciences 99:1-141
 W. I. Ausich. 1978. Community Organization, Paleontology, and Sedimentology of the Lower Mississippian Borden Delta Platform (Edwardsville Formation, Southern Indiana). Unpublished Doctoral Dissertation, Indiana University 1-433
 T. W. Kammer and W. I. Ausich. 2007. Stratigraphical and geographical distribution of Mississippian (Lower Carboniferous) Crinoidea from Scotland. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 98:139-150

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