平扭贝属

平扭贝属学名Platystrophia)是褶正形贝科下已灭绝的一个,生存于中奥陶纪至中志留纪,生活在海洋底部,利用短小的肉茎附著在石灰质或沙质基底上。[2]

平扭贝属
化石时期:468–419 Ma
奥陶纪志留纪
Platystrophia ponderosa (奥陶纪)
科学分类 编辑
界: 动物界 Animalia
门: 腕足动物门 Brachiopoda
纲: 小嘴贝纲 Rhynchonellata
目: 正形贝目 Orthida
科: 褶正形贝科 Plectorthidae
属: 平扭贝属 Platystrophia
King, 1850
模式种
Porambonites costatus
Pander, 1830[1]

见内文

特征

壳体大小中等,外形接近长方形,两瓣壳突出明显。壳体沿著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

  1. ^ 1.0 1.1 Fossilworks: Platystrophia. [2018-01-02]. (原始内容存档于2018-05-21) (英语). 
  2. ^ 2.0 2.1 Walker, Cyril; Ward, David. Fossils. Smithsonian Handbooks revised, illustrated. Dorling Kindersley. 2002: 79. ISBN 0789489848. 

外部链接