A magnificent fossil crinoid from Carboniferous "Agaricocrinus splendens" on the original matrix (rock). Age: Carboniferous, Mississippian (358 million years). Location: Crawfordsville, Indiana - USA Dimensions: 13 cm including stem - Rock 21 cm This is an excellent crinoid of Agaricocrinus splendens from famous crinoid beds near Crawfordsville, Indiana. This site is not excavated anymore, so no new examples will be available. The quality of the preparation of this fossil is exquisite, thanks to skillful techniques air abrasion under a stereomicroscope! The fossil has been reglued, as the slab broke during extraction.