First Occurrence of Doswellia cf. D. Kaltenbachi (Archosauriformes) from the Late Triassic (Middle Norian) Chinle Formation of Arizona and Its Implications on Proposed Biostratigraphic Correlations across North America during the Late Triassic
First Occurrence of Doswellia cf. D. Kaltenbachi (Archosauriformes) from the Late Triassic (Middle Norian) Chinle Formation of Arizona and Its Implications on Proposed Biostratigraphic Correlations across North America during the Late Triassic
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DOI：
10.1080/02724634.2021.1976196
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发表时间：
2021-05
影响因子：
1.4
通讯作者：
W. Parker;S. Nesbitt;A. Marsh;B. Kligman;K. Bader
中科院分区：
文献类型：
--
作者：
W. Parker;S. Nesbitt;A. Marsh;B. Kligman;K. Bader
摘要Doswell lia kaltenbachi是美国晚三叠世(弗吉尼亚和德克萨斯)发现的一种长鼻子非始祖龙类始龙。亚利桑那州钦勒组的新材料代表了D.cf.来自那个阵型和状态的D.kaltenbachi。这一发现来自于石化森林国家公园中阿达马期估计的全时臭氧(晚三叠世：诺里纪中期)的模式剖面，并坚定地证实了该分类群在阿达马期的存在。这一发现增加了钦勒组(Adamania)蓝色台地上部的多样化脊椎动物组合。更广泛地说，这一新发现加强了与德克萨斯州较老的(最新的卡尼期或最早的诺利安)奥蒂夏基期以及可能更古老的弗吉尼亚州桑福迪亚/科纳瓦格期组合的生物地理联系。多斯威利亚的时空分布突出表明，北美大陆脊椎动物组合在阿达马尼亚-鲁弗尔斯蒂安边界之前跨越卡尼安-诺里安边界的相似性。
ABSTRACT Doswellia kaltenbachi is a long-snouted non-archosaur archosauriform known from the Late Triassic of the United States (Virginia and Texas). New material from the Chinle Formation of Arizona represents the first occurrence of D. cf. D. kaltenbachi from that formation and state. This occurrence is from the type section for the Adamanian estimated holochronozone (Late Triassic: middle Norian) in Petrified Forest National Park and firmly establishes the presence of this taxon in the Adamanian. This occurrence adds to the diverse vertebrate assemblage of the upper part of the Blue Mesa Member of the Chinle Formation (Adamanian). More broadly, the new occurrence strengthens biogeographic links to the older (latest Carnian or earliest Norian) Otischalkian from Texas and the possibly older Sanfordian/Conewagian assemblages of Virginia. The spatiotemporal distribution of Doswellia underscores the similarity of North American continental vertebrate assemblages across the Carnian–Norian boundary prior to the Adamanian–Revueltian boundary.