Cyathocrinites tiaraeformis Crinoid Fossil

Cyathocrinites tiaraeformis (Troost, 1850) crinoid calyx fossil Plate 7 figures 15-17 drawn by Major Adolphus Heiman (1809-1862) from A Critical Summary of Troost's Unpublished Manuscript on the Crinoids of Tennessee by Elvira Wood 1909. This crinoid was found in the Carboniferous Period Keokuk horizon of the Tullahoma Formation of White's Creek Springs, Davidson County Tennessee USA. It was assigned U.S. National Museum number 54236 and identified as a holotype. Elvira Wood lists it as Ichthyocrinus tiaraeformis (Troost) Hall.

Pictures of the actual Troost fossil at the Smithsonian shown below.

Image courtesy of the Smithsonian Institution Specimen Catalog Number:  USNM PAL 54236 Specimen GUID:         http://n2t.net/ark:/65665/390e41ca3-405f-4e83-91c9-5e494bfd3e5b Specimen housed in the collections of the Department of Paleobiology, National Museum of Natural History, Smithsonian Institution

 

 

 

Image courtesy of the Smithsonian Institution Specimen Catalog Number:  USNM PAL 54236 Specimen GUID:         http://n2t.net/ark:/65665/390e41ca3-405f-4e83-91c9-5e494bfd3e5b Specimen housed in the collections of the Department of Paleobiology, National Museum of Natural History, Smithsonian Institution

 

Image courtesy of the Smithsonian Institution Specimen Catalog Number:  USNM PAL 54236 Specimen GUID:         http://n2t.net/ark:/65665/390e41ca3-405f-4e83-91c9-5e494bfd3e5b Specimen housed in the collections of the Department of Paleobiology, National Museum of Natural History, Smithsonian Institution