李晓波,张梅生,王旖旎

• 1:吉林大学地球科学学院

摘要(Abstract)：

中华弓鳍鱼科(Sinamiidae)是全骨鱼类弓鳍鱼目中已经绝灭的一个支系,目前只在亚洲东部的早白垩世陆相沉积中有发现,是热河生物群的重要成员。该科现有3属8种,分布范围最北可达中国东北最北部,最南至东南亚的泰国,向西可至甘肃省的酒泉盆地,向东可及日本中部。其中中华弓鳍鱼属Sinamia是热河脊椎动物群属级分类单元中地理分布最广阔的。中华弓鳍鱼科在多个地方性鱼群中也都有出现,这些鱼群分别为:中国华北、东北及西北部分地区的Lycoptera-Peipiaosteus鱼群(包括酒泉盆地的Jiuquanichthy鱼群),中国华南、日本、朝鲜的Mesoclupea-Paraclupea鱼群(包括日本的石?白鱼群、胁野鱼群和韩国的洛东鱼群),以及泰国东部的早白垩世鱼群。中华弓鳍鱼科的分布特征是早白垩世东亚地区自成一个古生物地理区系的证据之一,化石已知时代延限为早白垩世Barremian-Albian期,在Aptian期达到最大分布范围。广泛的分布、集中的时代延限、鲜明的鉴定特征使得此类化石非常有助于提高地层对比的精度,或者提供很好的验证。

关键词(KeyWords)： 中华弓鳍鱼科;热河生物群;古生物地理;地层对比;早白垩世;亚洲

Abstract:

Keywords:

基金项目(Foundation): 全国油气资源战略选区调查与评价项目“大庆探区外围中新生代地层划分、对比及分布规律”(XQ-2004-07-02);; 全球油气地质综合研究与区域优选项目“东西伯利亚及远东地区区域基础地质研究”(GT-YQ-QQ-2008-07-1)

作者(Author): 李晓波,张梅生,王旖旎

DOI: 10.19839/j.cnki.dcxzz.2010.01.004

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