Echinoderms; Endoskeleton; Latticework Structure; Mississippian; Mahaska County, Iowa; Pella Formation; Passalocrinus; Dichocrinus; Diploblastus; Modern Comatulid
A microcrinoid (Passalocrinus), camerate crinoid (Dichocrinus) and small blastoid (Diploblastus) are examined at high magnification and reveal latticework endoskeletal plates with slightly varied patterns of voids and interlocking rods. Cirrals from the base of a modern comatulid are illustrated for comparison.
Proceedings of the Iowa Academy of Science
©1974 Iowa Academy of Science, Inc.
Strimple, H. L.
"A Preliminary Study of Echinoderms with the Aid of a Scanning Electron Microscope,"
Proceedings of the Iowa Academy of Science, 81(2), 51-55.
Available at: https://scholarworks.uni.edu/pias/vol81/iss2/5