Neha Patil

Atrina

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Kingdom  Animalia
Scientific name  Atrina
Higher classification  Pinnidae
Order  Pterioida
Family  Pinnidae
Phylum  Mollusca
Rank  Genus
Atrina HomeNATURAL HISTORY MUSEUM ROTTERDAM Mollusca Bivalvia
Lower classifications  Atrina maura, Atrina rigida, Atrina fragilis

Sorry atrina


Atrina is a cosmopolitan genus of bivalve molluscs belonging to the family Pinnidae.

Contents

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. The type species is A. nigra (Dillwyn, 1817, originally P. nigra).

Atrina Atrina rigida Lightfoot 1786 Let39s Talk Seashells

Atrina is considered to represent the more primitive form within the Pinnidae; however, both genera Pinna and Atrina are very ancient. The genus Atrina is represented within the fossil record from the Triassic period to the Quaternary period (age range: 242.0 to 0.0 million years ago). These fossils have been found all over the world.

Atrina Atrina serrata G B Sowerby I 1825 Let39s Talk Seashells

Atrina


Description

Atrina wwwidscaronetsci01collpicsbivalpinnidaeat

Molluscs within this genus are characterized by elongated, wedge-shaped shells, distinguished from the genus Pinna by the lack of any grooves in the nacreous lining of the shell, and by the central positioning of the adductor scar.

Atrina Atrina serrata G B Sowerby I 1825 Sawtooth Penshell and Symbiont

As with other pen shells (Pinnidae) they commonly stand point-first in the sea bottom in which they live, anchored by net of byssus threads.

Species

Species within the genus Barbatia include:

Atrina Pinnidae pictures
Atrina Pinnidae pictures

References

Atrina Wikipedia


Similar Topics
Atrina fragilis
Atrina rigida
Atrina seminuda
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