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Atrina
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Kinoshitai
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Chautardi
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Argentea
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Affinis
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Chinensis
''Atrina'' is a cosmopolitan genus of bivalve molluscs belonging to the family Pinnidae. A typical species is ''Atrina fragilis, A. fragilis'', found in British waters. ''Atrina rigida, A. rigida'' (John Lightfoot FRS, Lightfoot, 1786) is found on the southeast coast of North America and in the West Indies. The type species is ''A. nigra'' (Lewis Weston Dillwyn, Dillwyn, 1817, originally ''P. nigra''). ''Atrina'' is considered to represent the more primitive form within the Pinnidae; however, both genera ''Pinna (bivalve), 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. Description Molluscs within this genus are characterized by elongated, wedge-shaped shells, distinguished from the genus ''Pinna (genus), Pinna'' by the lack of any grooves in the nacreous lining of the shell, and by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Cumingii
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Exusta
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Harrisii
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Inflata
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Hystrix
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Jacksoniana
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Japonica
''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. The type species is ''A. nigra'' ( Dillwyn, 1817, originally ''P. nigra''). ''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. Description 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. As with other pen shells (Pinnidae) they commonly sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |