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Mucrospirifer
''Mucrospirifer'' is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida. They are sometimes known as "butterfly shells". Like other brachiopods, they were filter feeders. These fossils occur mainly in Middle Devonian strata and appear to occur around the world, except in Australia and Antarctica. The biconvex shell was typically 2.5 cm long, but sometimes grew to 4 cm. The shell of ''Mucrospirifer'' has a fold, sulcus and costae. It is greatly elongated along the hinge line, which extends outward to form sharp points. This gives them a fin- or wing-like appearance. The apex area (umbo) of the pedicle valve contains a small fold for the pedicle. ''Mucrospirifer'' lived in muddy marine sediments, and were attached to the sea floor via the pedicle. The shell sometimes looks like two seashells stuck together. Species *''Mucrospirifer albanensis'' *''Mucrospirifer arkonensis'' *''Mucrospirifer bouchardi'' *'' Mucrospirifer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mucrospirifer Arkonensis
''Mucrospirifer'' is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida. They are sometimes known as "butterfly shells". Like other brachiopods, they were filter feeders. These fossils occur mainly in Middle Devonian strata and appear to occur around the world, except in Australia and Antarctica. The biconvex shell was typically 2.5 cm long, but sometimes grew to 4 cm. The shell of ''Mucrospirifer'' has a fold, sulcus and costae. It is greatly elongated along the hinge line, which extends outward to form sharp points. This gives them a fin- or wing-like appearance. The apex area (umbo) of the pedicle valve contains a small fold for the pedicle. ''Mucrospirifer'' lived in muddy marine sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
