Atrina - Wikipedia
Atrina is a cosmopolitan genus of bivalve molluscs belonging to the family Pinnidae. A typical species is A. fragilis , found in British waters. A. rigida ( Lightfoot , 1786) is found on the southeast coast of North America and in the West Indies.
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Atrina fragilis - Wikipedia
Atrina fragilis, the fan mussel, is a species of large saltwater clam, a marine bivalve mollusc in the family Pinnidae, the pen shells. The fan mussel, Atrina fragilis is one of the largest (30 to 48 cm long) and rarest bivalve molluscs occurring in northern European waters and the only member of the family Pinnidae to inhabit UK waters. [1]
Stiff Pen Shell (Atrina rigida) - ThoughtCo
May 24, 2011 · The stiff pen shell, or rigid pen shell, is one of the several species of pen shells. These mollusks have a long, triangular, or wedge-shaped shell and attach to rocks or shells in sandy, shallow ocean bottoms.
Atrina rigida - Wikipedia
Atrina rigida, commonly called the rigid pen shell, is a species of bivalve mollusc in the family Pinnidae. Description. The rigid shell has a pair of thick spiny valves held together by ligaments that run along the entire dorsal side of the bivalve.
Atrina rigida - Facts, Diet, Habitat & Pictures on Animalia.bio
Atrina rigida, commonly called the rigid pen shell, is a species of bivalve mollusc in the family Pinnidae.
Pen Shells | FWC - Florida Fish and Wildlife Conservation Commission
The pen shell (Atrina rigida) has two thin-walled, fan-shaped shells and is one of the largest bivalves (two shells) in the world, reaching lengths up to 10 inches (250 millimeters).
Pen Shell - Gulf Specimen Marine Laboratory
M-650 PEN SHELL, Atrina rigida, or A. serrata. A large, brown fan-shaped bivalve that anchors itself down into the sand with an enormous tuft of silk byssus threads.
Stiff Pen Shell (Atrina rigida) - iNaturalist
Atrina rigida, commonly known as the rigid pen shell, is species of large bivalve mollusc which is found from the North Carolina coast south through the West Indies and south from there to Brazil.
Atrina fragilis - Facts, Diet, Habitat & Pictures on Animalia.bio
The fan mussel, Atrina fragilis is one of the largest (30 to 48 cm long) and rarest bivalve molluscs occurring in northern European waters and the only member of the family Pinnidae to inhabit UK waters.
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