Kingdom Animalia Class Blastoidea Family Pentremitidae | Phylum Echinodermata Rank Genus | |
Similar Blastoid, Platystrophia, Platyceras, Worthenia, Archimedes | ||
Pentremites is an extinct genus of blastoid echinoderm belonging to the family Pentremitidae.
Description
These echinoderms averaged a height of about 11 centimetres (4.3 in)but occasionally ranged up to about 3 times that size. They were related to the crinoids or sea lilies, living on the sea floor attached by a stalk. They trapped food floating in the currents by means of tentacle-like appendages.
Pentremites species lived in the early to middle Carboniferous, from 360.7 to 314.6 Ma. Its fossils are known from North America.
References
Pentremites Wikipedia(Text) CC BY-SA