Macrocrinus mundulus

$1,100.00

Vendor: Fossil Soup

SKU Number: SQ1266618

An exceptional example of Macrocrinus mundulus, Edwardsville Formation, Mississippian, Carboniferous, Crawsfordsville, Montgomery County, Indiana, USA.

This is a museum quality example for the truly discerning collector. The preservation, completeness, preparation and aesthetic appearance make this a beautiful display piece.

The stalk and the crown are exceptional on this example. The stalk is formed of numerous calcarious plates called ossicles that flow towards the crown. The crown is composed of cup shaped sets of plates in a pentaradial pattern around the crinoid. This part of the crown is known as the calyx. The arms that extend from the calyx are called brachia. There are lateral unbranched extensions of plates that protrude from the arms called pinnules.

This example has the anus perfectly preserved between and extending beyond the arms of the crown.

The crinoids from the world famous location of Crawfordsville, Indiana are about 320 Million Years Old.

This specimen has a crown of about 5.20 cm and a total length of about 12+ cm.

Full dimensions are listed below.

Vendor: Fossil Soup

SKU Number: SQ1266618

An exceptional example of Macrocrinus mundulus, Edwardsville Formation, Mississippian, Carboniferous, Crawsfordsville, Montgomery County, Indiana, USA.

This is a museum quality example for the truly discerning collector. The preservation, completeness, preparation and aesthetic appearance make this a beautiful display piece.

The stalk and the crown are exceptional on this example. The stalk is formed of numerous calcarious plates called ossicles that flow towards the crown. The crown is composed of cup shaped sets of plates in a pentaradial pattern around the crinoid. This part of the crown is known as the calyx. The arms that extend from the calyx are called brachia. There are lateral unbranched extensions of plates that protrude from the arms called pinnules.

This example has the anus perfectly preserved between and extending beyond the arms of the crown.

The crinoids from the world famous location of Crawfordsville, Indiana are about 320 Million Years Old.

This specimen has a crown of about 5.20 cm and a total length of about 12+ cm.

Full dimensions are listed below.

Specimen Details
Name: Macrocrinus mundulus Order/Family: Monobathrida/Batocrinidae Age: Lower Mississippian Locality: Crawfordsville, Indiana Formation: Edwardsville Formation
Matrix Dimensions
Dimensions: In Centimeters Length: 17.00 cm Width: 11.50 cm Height: 1.50 cm Weight: N/A
Specimen Dimensions
Dimensions: In Centimeters Length: 12.00 cm Width: 1.70 cm Height: Negligable Weight: N/A
Shipping Dimensions
Dimensions: In Inches Length: 10.0 inches Width: 7.0 inches Height: 4.0 inches Weight: N/A
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Additional Information

Sea urchins belong to the Phylum Echinodermata and includes crinoids, brittle stars and sea cucumbers. The first echinoderms appear in the Lower Cambrian period.

It has been suggested that he ancestor of all echinoderms was a simple bi-laterally symmetrical animal with a mouth, gut and anus. This ancestral organism adopted an attached mode of life with suspension feeding, and developed radial symmetry. Even so, the larvae of all echinoderms are bilaterally symmetrical, and all develop radial symmetry at metamorphosis. Like their ancestor, the starfish and crinoids still attach themselves to the seabed while changing to their adult form.

References:

Sea Urchins
Irregularia
Echinoderm

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