| 北美内陆西部白垩纪脊椎动物生物年代学 |
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| 作者姓名： | Spencer G.LUCAS Robert M.SULLIVAN Justin A.SPIELMANN |
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| 作者单位： | 新墨西哥州自然历史与科学博物馆;宾夕法尼亚州立博物馆古生物学和地质学部 |
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| 基金项目： | 国家自然科学基金(No.91114201);国家重点基础研究发展计划(2012CB821906)资助出版 |
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| 摘 要： | 北美西部内陆白垩纪的脊椎动物生物年代学的研究始于19世纪90年代。前人建议的期,即陆生脊椎动物"期"或陆生哺乳动物"期"名已过十二个,但其中具有精确的定义者甚少,仅有少量的建议受到广泛认可和使用。本文定义或重新定义了10个陆生脊椎动物"期",包括了西部内陆从最老至最新的全部白垩纪—Comobluffian期(～提塘期至欧特里沃期)、Buffalogapian期(～巴列姆期至早阿普特期)、Cashenranchian期(～早阿普特期至晚阿尔布期)、Mussentuchian期(～晚阿尔布期至塞诺曼期)、Fencelakean期(土伦期至晚塞农期)、Aquilan期(～晚塞农期至早坎潘期)、Judithian期(～中坎潘期)、Kirtlandian期(～晚坎潘期)、Edmontonian期(～坎潘期末期至早马斯特里赫特期)以及Lancian期(～早马斯特里赫特期晚期)。每一个"期"的开始由一种恐龙或哺乳动物种类的首现来定义,而其结束由后续的"期"的开始来定义。这样定义的脊椎动物生物年代代表了完整的白垩纪时间表。但有些时间段(尤其是Neocomian(尼欧克姆期)的大部分以及部分"中"白垩世的一部分)缺乏足够的脊椎动物化石特征。这些白垩纪陆生脊椎动物"期"构成了一个能使北美西部内陆的脊椎动物的演化历史得以序和解释年代表。
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| 关 键 词： | 生物地层学 脊椎动物的生物年代学 陆相脊椎动物“期” 白垩纪 西部内陆 北美地区 |
CRETACEOUS VERTEBRATE BIOCHRONOLOGY,NORTH AMERICAN WESTERN INTERIOR |
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| Spencer G.LUCAS,Robert M.SULLIVAN,Justin A.SPIELMANN.CRETACEOUS VERTEBRATE BIOCHRONOLOGY,NORTH AMERICAN WESTERN INTERIOR[J].Journal of Stratigraphy,2012(2):436-461. |
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| Authors: | Spencer GLUCAS Robert MSULLIVAN and Justin ASPIELMANN New Mexico Museum of Natural History and Science Mountain RdNW Albuquerque NM - ; Section of Paleontology and Geology |
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| Institution: | ,The State Museum of Pennsylvania,300 North Street,Harrisburg,PA 17120-0024, |
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| Abstract: | The development of a vertebrate biochronology for the Cretaceous Period of the North American Western Interior began in the 1890s.More than one dozen stages,land-vertebrate "ages" or land-mammal "ages" have been proposed,though very few have been precisely defined and only a few have been widely recognized and used.We redefine/define 10 land-vertebrate "ages" to encompass all of Cretaceous time in the Western Interior(oldest to youngest)-Comobluffian(～Tithonian Hauterivian),Buffalogapian(～Barremian early Aptian),Cashenranchian(～early Aptian late Albian),Mussentuchian(～late Albian Cenomanian),Fencelakean(～Turonian late Santonian),Aquilan(～late Santonian early Campanian),Judithian(～middle Campanian),Kirtlandian(～late Campanian),Edmontonian(～latest Campanian-early Maastrichtian) and Lancian(～late Maastrichtian).Each of these "ages" has its beginning defined by the first appearance of a dinosaur or mammal taxon,and the end of an "age" is defined by the beginning of the succeeding "age".The vertebrate biochronology thus defined represents a complete Cretaceous timescale,though some intervals(especially much of the Neocomian and parts of the "middle" Cretaceous) lack adequate vertebrate fossil characteriza-tion.The Cretaceous land-vertebrate "ages" are a timescale with which the evolutionary history of vertebrates in the Western Interior can be organized and interpreted. |
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| Keywords: | biostratigrphy vertebrate biochronology land-vertebrate "ages" Cretaceous Western Interior North America |
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