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楔齒龍屬

2018-06-25 19:38:54
 
楔齒龍屬
化石時期: 早二疊紀
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兩只楔齒龍
兩只楔齒龍
科學分類
界: 動物界 Animalia
門: 脊索動物門 Chordata
綱: 合弓綱 Synapsida
目: 盤龍目 Pelycosauria
科: 楔齒龍科 Sphenacodontidae
屬: 楔齒龍屬 Sphenacodon
模式種
Sphenacodon ferox
Marsh, 1878
  • S. ferox Marsh, 1878
  • S. britannicus (Huene, 1908)
  • S. ferocior Romer, 1937

楔齒龍屬(屬名:Sphenacodon)屬于盤龍目楔齒龍科,楔齒龍科是獸孔目的近親。楔齒龍身長約3米,生存于早二疊紀的北美洲,尤其是德州與新墨西哥。

楔齒龍的脊椎神經棘很長,可能作為大量的背部肌肉附著用,使得楔齒龍可用力地撲向獵物。雖然楔齒龍的脊椎神經棘很長,但它們沒有異齒龍的帆狀物。然而,楔齒龍、異齒龍與其他楔齒龍類有接近親緣關系。楔齒龍的頜部厚重、牙齒健壯,具有長的犬齒與切割用牙齒,顯示它們是肉食性動物1。

圖片集

參考資料

  1. ^ Palmer, D. (編). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. 1999: 187. ISBN 1-84028-152-9. 
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