https://oceaniclink.com/product/crinoids-fossil-tumbled-stones-15-to-30-mm-handpolished/
Crinoids Fossil Tumbled Stones | New Jersey | Oceanic Linkways
tumbled stonesnew jerseycrinoidsfossiloceanic
https://kuscholarworks.ku.edu/entities/publication/4e874587-1bba-4c24-adf5-01f1c1b57ca8
Publications by Shumard and McChesney concerning crinoids and other fossils
publicationsconcerningcrinoidsfossils
https://scholarworks.uni.edu/pias/vol88/iss3/3/
"Early Silurian Camerate Crinoids of Eastern Iowa" by Brian J. Witzke and Harrell L. Strimple
Large and diverse Lower Silurian (late Llandoverian) camerate crinoid faunas from the Hopkinton Dolomite of eastern Iowa form the basis of the present study...
eastern iowabrian jearlysiluriancrinoids
https://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7511141
Additional Palaeozoic crinoids from Ladakh, Himalaya India
additionalcrinoidsladakhhimalayaindia
https://repository.si.edu/items/92a658f9-2b59-4667-aef8-74d370c4befa
The crinoids of the Natural History Museum at Hamburg
natural history museumcrinoidshamburg