Lovely Crinoid Macrocrinus mundulus, Mississippian, Indiana

  • $ 230.00


For sale is a wonderful crinoid fossil, Macrocrinus mundulus, from Montgomery County, Indiana, USA. This is a beautifully preserved specimen; the stem is in good condition and the arms and calyx are well defined. Unfortunately the holdfast was not fossilized or had broken off. Other than that, I would call this one an almost pristine crinoid.

Species: Macrocrinus mundulus

Length of Matrix: 3.644" (92.55mm)

Width of Matrix: 2.486" (63.16mm)

Length of Crinoid: 3.5" (90mm)

Width of Crinoid: 15.76mm (0.62")

Weight: 3.965 oz. (112.42 grams)

Crinoids (more commonly known as 'sea lilies') are a class of marine animals belonging to the phylum Echinodermata (Echinoderms). There are around 600 extant species but were more abundant in the past, specifically mid to late Paleozoic. Crinoids are characterized by a mouth surrounded by feeding arms with a U-shaped gut. Most of them have a stem used to attach themselves to a substrate but some species become free-swimming as adults. Here is more information on these fascinating echinoderms.

Species: Macrocrinus mundulus

Length of Matrix: 3.644" (92.55mm)

Width of Matrix: 2.486" (63.16mm)

Length of Crinoid: 3.5" (90mm)

Width of Crinoid: 15.76mm (0.62")

Weight: 3.965 oz. (112.42 grams)

Location: Montgomery County, Indiana, USA

Era: Paleozoic

Period: Carboniferous

Subsystem/Series: Mississippian

Age: 346 to 323 Million Years

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