翔龙属

翔龙属
化石时期:巴列姆期130–125.45 Ma
翔龙的复原图
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行綱 Reptilia
目: 有鳞目 Squamata
亚目: 鬣蜥亞目 Iguania
演化支 避役形类 Chamaeleontiformes
演化支 端齿鬣蜥类 Acrodonta
属: 翔龙属 Xianglong
Li et al., 2007
模式種
赵氏翔龙
Xianglong zhaoi

Li et al., 2007

翔龙学名Xianglong,既“飞翔的龙”)是一属生存于白垩纪蜥蜴。发现于中国辽宁省义县组的砖城子层(Zhuanchengzi Bed),身体两侧具有延长且附有薄膜的肋骨,使其具有滑翔的能力。[1]

描述

翔龙属正模标本(编号LPM000666)发现于义县组,包括完整骨架与皮肤印痕,长约15厘米,其描述者推断正模可能为一具青年个体。其腕骨跗骨骨化程度较低,第四掌骨短于其他掌骨,足部第五延长,桡骨尺骨末端分叉,体表覆盖颗粒化的细小鳞片。其略带弯曲的爪子以及滑翔结构说明翔龙可能是一种树栖动物,类似于现代飞蜥。

分类

翔龙的首次描述将其归入端齿鬣蜥类飞蜥科,是避役科腊皮蜥属的近亲。下图为演化树:[1]

孔耐蜥科 Kuehneosauridae

大理石蜥属 Marmoretta

喙头目 Rhynchocephalia

美洲鬣蜥科 Iguanidae

翔龙属 Xianglong

飞蜥亚科 Agaminae

避役科 Chamaeleonidae

腊皮蜥属 Leiolepidinae

多槽齿蜥属 Polyglyphanodon

巨首蜥属 Macrocephalosaurus

中华蚓蜥属 Sineoamphisbaena

双足蜥科 Dibamidae

蚓蜥科 Amphisbaenia

睑虎科 Eublepharinae

壁虎科 Gekkonidae

澳洲蜥虎科 Diplodactylinae

鳞脚蜥科 Pygopodidae

蜥蜴科 Lacertidae

美洲蜥蜴科 Teiidae

裸眼蜥科 Gymnophthalmidae

非洲蜥蜴科 Cordylidae

石龙子科 Scincidae

蛇蜥科 Anguidae

异蜥属 Xenosaurus

鳄蜥属 Shinisaurus

毒蜥属 Heloderma

婆罗蜥属 Lanthanotus

巨蜥属 Varanus

崖蜥科 Aigialosauridae

沧龙科 Mosasauridae

伸龙科 Dolichosauridae

胀蜥属 Adriosaurus

厚蛇属 Pachyrhachis

哈氏蛇属 Haasiophis

蛇亚目 Serpentes

参考文献

  1. ^ 1.0 1.1 Pi-Peng Li; Ke-Qin Gao; Lian-Hai Hou & Xing Xu. A gliding lizard from the Early Cretaceous of China (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2007, 104 (13): 5507–5509 [2023-01-14]. Bibcode:2007PNAS..104.5507L. PMC 1838464可免费查阅. PMID 17376871. doi:10.1073/pnas.0609552104可免费查阅. (原始内容存档 (PDF)于2015-09-24). 

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