11. Crinoids are supported by jointed stalks containing substantial compound ossicles.12. It is believed to be the crinoid living at the greatest depth. 13. Marine life is especially rich in crinoids and other vertebrates included large amphibians. 14. Bryozoans are small and the skeletons of crinoids disintegrate. 15. Collecting crinoid fossils on the beach is strictly prohibited. 16. The Mississippian limestone is rich in marine fossils, especially crinoids and blastoids. 17. He supplied crinoid specimens to Agassiz in Cambridge and to the British Museum. 18. These are not rare, but are not commonly found in crinoid deposits. 19. Crinoid arms are long organs that came out of the crinoid ball.20. Crinoid arms are long organs that came out of the crinoid ball.
