Mississippian Period of South Central Kentucky. Crinoids and blastoids are echinoderms. There still are crinoids in the present day oceans however over 600 varieties are extinct. The Mississippian period would have been Early Carboniferous which was 358.9–298.9 million years ago.
South Central Kentucky would have been shallow sea with lots of shallow sea plants. Crinoids are the fossil remnants of stems of flower like animals. Carboniferous period
Crinoids
Missippian Period of Kentucky
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