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迷龍屬

迷龙属
化石时期:晚三叠世223  Ma
正模標本的踝骨化石
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龍總目 Dinosauria
目: 蜥臀目 Saurischia
亚目: 獸腳亞目 Theropoda
科: 腔骨龙科 Coelophysidae
属: 迷龙属 Lepidus
Nesbitt & Ezcurra, 2015
模式種
碎片迷龍
Lepidus praecisio

Nesbitt & Ezcurra, 2015

迷龍屬名:Lepidus)是美國晚三疊世滅絕腔骨龍科獸腳類恐龙。它生存於大約2.23億年前的德克薩斯州多库姆群英语Dockum Group的奥缇斯白垩层。[1]

發現

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假設的復原圖

2015年,Nesbitt和Ezcurra首次對這具化石進行了描述,他們認為有必要建立一個新的分類單元,並將其命名為碎片迷龍Lepidus praecisio)。屬名是拉丁語,意為“迷人的”,而種名在拉丁語中表示“片段”或“碎片”。正模標本包括脛骨踝骨英语astragalus腓骨化石,其他參攷化石材料包括股骨上頜骨。這些化石材料保存完好,並顯示出肌肉的痕跡。踝骨英语astragalus跟骨英语calcaneus明顯融合成一根骨頭,沒有明顯的接縫。脛骨的形態在整體上與新獸腳類恐龍相似。脛骨的形狀與坎普龍腔骨龍太陽神龍曙奔龍艾雷拉龍相似。[1][2]

分類學

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可能屬於正模標本的部分上頜

對可能屬於正模標本的上頜化石進行了繫統發育分析,結果如下所示。[1]

新獸腳類 Neotheropoda

理理恩龍 Liliensternus

惡魔龍 Zupaysaurus

迷龍 Lepidus(正模標本+參考材料)

腔骨龍超科 Coelophysoidea

卡岩塔合踝龍 Syntarsus kayentakatae

迷龍 Lepidus(正模標本)

鮑氏腔骨龍 Coephysis bauri

羅德西亞腔骨龍 Coelophysis rhodesiensis

亞利桑那坎普龍 Camposaurus arizonensis

長鱷龍 Dilophosaurus

冰脊龍 Cryolophosaurus

堅尾龍類 Tetanurae

角鼻龍 Ceratosaurus

參考資料

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迷龍屬
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