Here is an image of a large crinoid calyx (about 10 cm in diameter). It was found in the Devonian Period Jeffersonville (?) Limestone of Jefferson County, Kentucky USA. It might be some sort of Dolatocrinus. Refer to plate 74 figures 21b and 23 of Index Fossils of North America (Shimer & Shrock, 1944).
Thanks to Kenny for the picture.
2 comments:
I beleive this is aDolatocrinus major. see plate XXV, fig. 5 in the North American Crinoids - Washsmuth
kenny p
I was wrong, look at the falls of Ohio crinoid sheets page 2 for Dolatocrinus ornatus, the plates match, but this onedoes not have any signs of the ridge plates.
Kenny P.
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