卡瑪卡瑪龍屬

卡玛卡玛龙属
化石时期：白堊紀森諾曼階
科学分类 编辑
界： 动物界 Animalia
门： 脊索动物门 Chordata
纲： 爬行綱 Reptilia
演化支： 真爬行動物 Eureptilia
演化支： 卢默龙类 Romeriida
亚纲： 双孔亚纲 Diapsida
演化支： 新双弓类 Neodiapsida
演化支： 蜥类 Sauria
演化支： 主龜龍類 Archelosauria
下纲： 主龍形下綱 Archosauromorpha
演化支： 鱷腳類 Crocopoda
演化支： 主龍型類 Archosauriformes
演化支： 真鱷腳類 Eucrocopoda
演化支： 镶嵌踝类 Crurotarsi
演化支： 主龍類 Archosauria
演化支： 偽鱷類 Pseudosuchia
演化支： 鳄类 Suchia
演化支： 副鱷形類 Paracrocodylomorpha
演化支： 铠鳄类 Loricata
总目： 鱷形超目 Crocodylomorpha
属： †卡玛卡玛龙属 Kemkemia
Cau & Maganuco, 2009
模式種
安氏卡瑪卡瑪龍
Kemkemia auditorei
Cau & Maganuco, 2009

卡瑪卡瑪龍屬（屬名：Kemkemia）是鱷形超目的一屬，生存於白堊紀（森諾曼階）的北非，過去曾被歸類於獸腳亞目的阿貝力龍超科。

在1999年，一群義大利科學家在摩洛哥挖掘無脊椎動物化石時，發現卡瑪卡瑪龍的化石。正模標本（編號MSNM V6408）是一節末端尾椎，長6.048公分，高3.381公分。在2009年，義大利古生物學家Andrea Cau與Simone Maganuco將這個標本正式命名。模式種是安氏卡瑪卡瑪龍（K. auditorei）屬名是以卡瑪卡瑪地層為名，種名則是以義大利古動物繪畫家Marco Auditore為名[1]。

研究人員命名卡瑪卡瑪龍時，根據脊椎骨的形態，尤其是高度特化的神經棘，推論卡瑪卡瑪龍可能屬於新角鼻龍類，但由於化石過少，研究人員將其歸類於獸腳亞目的未定位屬。由於化石與發現於印度馬斯垂克階的尾椎相當類似，卡瑪卡瑪龍可能屬於新角鼻龍類的阿貝力龍超科。在2012年，這群義大利科學家重新研究這些化石，發現卡瑪卡瑪龍具有典型的鱷形類特徵，而非獸腳類恐龍[2]。

卡瑪卡瑪龍是種中型肉食性鱷形類，身長約4到5公尺。由於脊椎並不粗壯，卡瑪卡瑪龍可能是體型修長的。該標本來自於一個成年個體。在卡瑪卡瑪地層，曾發現許多大型獸腳類恐龍，例如：棘龍、鯊齒龍、三角洲奔龍，而鱷形類的化石較少。

參考資料

  1. ^ Cau, Andrea; Maganuco, Simone. A new theropod dinosaur, represented by a single unusual caudal vertebra from the Kem Kem Beds (Cretaceous) of Morocco. Atti Soc. it. Sci. nat. Museo civ. Stor. nat. Milano. 2009, 150 (II): 239–257. 
  2. ^ Lio, G., Agnolin, F., Cau, A. and Maganuco, S. (2012). "Crocodyliform affinities for Kemkemia auditorei Cau and Maganuco, 2009, from the Late Cretaceous of Morocco." Atti della Società Italiana di Scienze Naturali e del Museo di Storia Naturale di Milano, 153 (I), s. 119–126.

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