A two-headed reptile from the Cretaceous of China.

IF 3 2区生物学 Q2 BIOLOGY

Biology Letters Pub Date : 2007-02-22 DOI:10.1098/rsbl.2006.0580

Eric Buffetaut, Jianjun Li, Haiyan Tong, He Zhang

引用次数: 19

Abstract

A malformed embryonic or neonate choristoderan reptile from the Lower Cretaceous Yixian Formation of northeastern China is described. The tiny skeleton exhibits two heads and two necks, with bifurcation at the level of the pectoral girdle. In a fossil, this is the first occurrence of the malformation known as axial bifurcation, which is well known in living reptiles.

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中国白垩纪的双头爬行动物。

本文描述了中国东北下白垩统义县组的一种畸形胚胎或幼崽的史前爬行动物。这个微小的骨架有两个头和两个脖子，在胸带的水平处有分叉。在化石中，这是第一次出现被称为轴向分叉的畸形，这在现存的爬行动物中是众所周知的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biology Letters 生物-进化生物学

CiteScore

5.50

自引率

3.00%

发文量

164

审稿时长

1.0 months

期刊介绍： Previously a supplement to Proceedings B, and launched as an independent journal in 2005, Biology Letters is a primarily online, peer-reviewed journal that publishes short, high-quality articles, reviews and opinion pieces from across the biological sciences. The scope of Biology Letters is vast - publishing high-quality research in any area of the biological sciences. However, we have particular strengths in the biology, evolution and ecology of whole organisms. We also publish in other areas of biology, such as molecular ecology and evolution, environmental science, and phylogenetics.