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Description: | Specimen of a fossil blastoid, Orbitremites norwoodi, collected from unspecified rocks of Early (?) Carboniferous, Mississippian (?) age from Indiana, U.S.A.. Collected by David M. Lumsden.
Blastoids are an extinct group of echinoderms (a group that includes star fish and sea urchins). The bud-shaped calyx (cup) containing the animal's organs is usually all that is found in the fossil record. It was attached to the sea floor, either directly or by a stalk, and had a crown of delicate arms that it used to collect food particles from the sea water. The petal-shaped (abulacral) areas contained a groove that passed the food to the mouth in the centre. Blastoids are most commonly found in shallow water reef communities.
The specimen was found in USA.
It is from the Carboniferous period (362 - 290 million years ago) | Publisher: | Tyne & Wear Archives & Museums | Subjects: | David M. Classification: Animalia Blastoidea Echinodermata Invertebrata Lumsden | Temporal: | Carboniferous period (362 - 290 million years ago) | Source: | Tyne & Wear Archives & Museums | Identifier: | http://www.twmuseums.org.uk/geofinder/se... | Go to resource |
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