平扭贝属（学名：Platystrophia）是褶正形贝科下已灭绝的一个属，生存于中奥陶纪至中志留纪，生活在海洋底部，利用短小的肉茎附着在石灰质或沙质基底上。[2]
特征
壳体大小中等，外形接近长方形，两瓣壳突出明显。壳体沿着铰线延展到很宽的程度，而铰则向两边延展形成一对尖锐的耳状突起。腹壳上有明显的沟，背壳上则有相应的褶。壳间的连接线在前缘有显著折褶。众多顶锋锐利的肋向壳的边缘方向散发。[2]
物种[1]
- Orthis (Platystrophia) cypha James, 1874
- Orthis (Platystrophia) laticosta James, 1871
- Platystrophia acutilirata Conrad, 1842
- Platystrophia amoena McEwan, 1919
- Platystrophia annieana Foerste, 1910
- Platystrophia anomala Hiller, 1980
- Platystrophia baltica Zuykov & Harper, 2007
- Platystrophia biforatus Schlotheim, 1820
- Platystrophia caelata Williams, 1974
- Platystrophia chama Eichwald, 1861
- Platystrophia clarksvillensis Foerste, 1910
- Platystrophia colbiensis Foerste, 1910
- Platystrophia costata Zuykov, 2000
- Platystrophia costatus Pander, 1830
- Platystrophia crassoplicata Alichova, 1951
- Platystrophia cypha James, 1874
- Platystrophia dentata Pander, 1830
- Platystrophia elegantula McEwan, 1919
- Platystrophia extensa McEwan, 1920
- Platystrophia hongueda Li & Copper, 2006
- Platystrophia hopensis Foerste, 1910
- Platystrophia humilis Oraspold, 1959
- Platystrophia jaaniensis Rübel, 1963
- Platystrophia laticosta James, 1871
- Platystrophia lutkevichi Alikhova, 1951
- Platystrophia lynx Eichwald, 1830
- Platystrophia orbiculata Oraspold, 1959
- Platystrophia pogrebovi Zuykov & Harper, 2007
- Platystrophia ponderosa Foerste, 1909
- Platystrophia profundosulcata Meek, 1873
- Platystrophia quadriplicata Alikhova, 1951
- Platystrophia saxbyensis Oraspold, 1959
- Platystrophia scotica Williams, 1962
- Platystrophia trentonensis McEwan, 1919
参考文献
外部链接
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