戟貝屬
戟貝屬 化石時期:
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Chonetes gracilis | |
科學分類 | |
界: | 動物界 Animalia |
門: | 腕足動物門 Brachiopoda |
綱: | †扭月貝綱 Strophomenata |
目: | †長身貝目 Productida |
科: | †戟貝科 Chonetidae |
亞科: | †戟貝亞科 Chonetinae |
屬: | †戟貝屬 Chonetes Fischer de Waldheim, 1830 |
種 | |
見內文 |
戟貝屬(學名:Chonetes)是戟貝科戟貝亞科下已滅絕的一個屬,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耳狀突。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,沿着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
- ^ 1.0 1.1 Walker, Cyril; Ward, David. Fossils. Smithsonian Handbooks revised, illustrated. Dorling Kindersley. 2002: 83. ISBN 0789489848.
- ^ Fossilworks: Chonetes. [2018-01-24]. (原始內容存檔於2016-04-04) (英語).
外部連結
- Chonetes in the Paleobiology Database