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戟貝屬

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戟贝属
化石时期:奧陶紀–中侏羅紀
Chonetes gracilis
科学分类 编辑
界: 动物界 Animalia
门: 腕足動物門 Brachiopoda
纲: 扭月貝綱 Strophomenata
目: 長身貝目 Productida
科: 戟贝科 Chonetidae
亚科: 戟贝亚科 Chonetinae
属: 戟贝属 Chonetes
Fischer de Waldheim, 1830

見內文

戟貝屬學名Chonetes)是戟貝科戟貝亞科下已滅絕的一個,生存於晚奧陶紀至中侏羅紀,生活在海底鬆軟的石灰泥質基層上。[1]

特徵

這類腕足動物的體型相對較小,殼為半圓形並有長長的鉸線,鉸線向左右延伸形成一對狀突。腹殼凸起,背殼從扁平到微凹入的均有。內部的牙與眼窩很不發達。腹殼上有一條薄薄的、位於中間的隔片,沿著明顯的兩裂片肌肉瘢痕生長著。背殼也有一中間隔片,分為前後兩個肌肉瘢痕。兩殼均有凹痕,其狹窄的中間地帶長有翅脈和很小的殼針。[1]

物種[2]

  • Chonetes (Paeckelmannia)
  • Chonetes baragwanathi Gill, 1949
  • Chonetes burlingtonensis Weller, 1901
  • Chonetes chamishkjensis Licharew, 1937
  • Chonetes chaoi Licharew, 1937
  • Chonetes cherokeensis Snider, 1915
  • Chonetes chesterensis Weller, 1914
  • Chonetes compressa Waagen, 1884
  • Chonetes concentrica von Semenow, 1854
  • Chonetes concentricus Davidson, 1863
  • Chonetes deliciasensis King, 1931
  • Chonetes flemingi Norwood and Pratten, 1855
  • Chonetes foedus Talent, 1963
  • Chonetes foshagi Cooper, 1953
  • Chonetes geniculata White, 1862
  • Chonetes glabra Geinitz, 1866
  • Chonetes glenparkensis Weller, 1906
  • Chonetes gregarius Weller, 1901
  • Chonetes illinoisensis Worthen, 1860
  • Chonetes logani Norwood & Pratten, 1855
  • Chonetes mesoloba Norwood & Pratten, 1855
  • Chonetes missouriensis Weller, 1914
  • Chonetes moelleri Tschernyschew, 1902
  • Chonetes monosensis Cooper, 1953
  • Chonetes multicosta Winchell, 1863
  • Chonetes obtusa Schellwien, 1892
  • Chonetes oklahomensis Snider, 1915
  • Chonetes ornata Shumard, 1855
  • Chonetes pinegensis Kulikov, 2000
  • Chonetes planumbona Meek & Worthen, 1860
  • Chonetes posturalicus Ustritsky, 1963
  • Chonetes pygmoideus Cooper 1957
  • Chonetes rarispina Schellwien, 1892
  • Chonetes semiovalis Waagen, 1884
  • Chonetes shumardiana De Koninck, 1847
  • Chonetes sichuanensis Zeng & al., 1995
  • Chonetes sinuatus Krotow, 1885
  • Chonetes squama Waagen, 1884
  • Chonetes suavis Talent, 1963
  • Chonetes timanica Tschernyschew, 1902
  • Chonetes variolaris Keyserling, 1846

參考文獻

  1. ^ 1.0 1.1 Walker, Cyril; Ward, David. Fossils. Smithsonian Handbooks revised, illustrated. Dorling Kindersley. 2002: 83. ISBN 0789489848. 
  2. ^ Fossilworks: Chonetes. [2018-01-24]. (原始内容存档于2016-04-04) (英语). 

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