Seafloor Crinoids Association
harrodi, Macrocrinus mundulus, Unkown Crinoid Stem, Coral Section
Mississippian, Osagean Stage
Cyathocrinites Crinoid: Crown 17 mm long by 30 mm wide with stem 20 mm
long. Macrocrinus Crinoid: Crown 22 mm long by 15 mm wide with stem
mm long. Crinoid Stem: 47 mm long by 8 mm wide. Coral Section: 60 Mm
long by 15 mm wideMatrix: 92 mm by 75 mm.
Site: Crawfordsville, Indiana
A fine example of an Inadunate Cladid crinoid of the Family Cyathocrinidae,
the smaller crinoid is known as Cyathocrinites harrodi. The larger
crinoid is a Camerate crinoid of the Family Batocrinidae known as
Macrocrinus mundulus. They are very esthetically displayed on this
shield-shaped block of siltstone matrix. The section of stem obviously
belongs to a much larger crinoid, while the coral section attests
to the warm-water environment in which they all lived.
crinoid pictures to enlarge