Brachiopods - Brachiopods Bivalves With A Past Brachiopods...

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Brachiopods: Bivalves With A Past Brachiopods are benthic (bottom dwelling), marine (ocean), bivalves (having two shells). They are considered living fossils , with 3 orders present in today’s oceans. They are rare today but during the Paleozoic Era they dominated the sea floors. Though they appear to be similar to clams or oysters they are not related. They are not even mollusks. They belong to the phylum Lophophorata and are related to bryozoans . The Pedicle One characteristic unique to brachiopods is the pedicle. It is a long thin fleshy appendage. The pedicle is used to burrow into the sea floor as an anchor. Some Brachiopods have a muscular pedicle. They can raise themselves up off the bottom, looking like they are standing on their heads. For others it is more like a tether. Not all orders have a pedicle. Some lay on the sand on one side. With these the bottom shell is usually larger than the top shell. There are even some types that cement themselves to the ocean floor.
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This note was uploaded on 11/22/2011 for the course GLY GLY1100 taught by Professor Jaymuza during the Spring '10 term at Broward College.

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Brachiopods - Brachiopods Bivalves With A Past Brachiopods...

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