Pentremites – a blastoid

(pen-tree-my-tees)

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Model of Pentremites.
Image: Benjamin Healley
Source: Museum Victoria

Illustration and fossil of Pentremites godoni
Source: Museum Victoria

Carboniferous

HOW BIG IT WAS

Pentremites relative size depiction as described below
Pentremites was approximately 11 cm high.

Pentremites was a blastoid; a type of echinoderm related to the crinoids or ‘sea lilies’. Like crinoids, these animals lived on the sea floor attached by a stalk, and collected food that floated in the currents by trapping it in tentacle-like structures called branchioles. Blastoids were common in the Carboniferous, but became entirely extinct by the end of the Permian.

WHERE IT WAS FOUND

Pentremites map

This fossil of Pentremites was discovered in the USA.

RELATED OBJECTS

Other objects from the Carboniferous

Giant invertebratesPederpesGoniatitesStethacanthus