New records of the late Pliensbachian to early Toarcian (Early Jurassic) gladius‐bearing coleoid cephalopods from the Ya Ha Tinda Lagerstätte, Canada

New records of the late Pliensbachian to early Toarcian (Early Jurassic) gladius‐bearing coleoid cephalopods from the Ya Ha Tinda Lagerstätte, Canada
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加拿大亚哈廷达拉格斯塔特 (Ya Ha Tinda Lagerstätte) 普林斯巴赫纪晚期到托阿尔纪早期(侏罗纪早期)短剑鞘头足类动物的新记录

DOI:
10.1002/spp2.1104
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发表时间:
2018
影响因子:
2.3
通讯作者:
D. Fuchs
D. Fuchs
中科院分区:
地球科学2区
文献类型:
--
作者:
S. Marroquín;R. Martindale;D. Fuchs

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来自加拿大阿尔伯塔的Ya Ha Tinda Lagerstätte是第一个来自北美的侏罗纪海洋Konservat‐Lagerstätte,拥有大量保存完好的吸血鬼化石标本。Vampypropod是软体头足类动物(Coleoids),其特征是八个臂和一个内化的几丁质壳(gladius)。由于缺乏坚硬的部分,Vamppyropoda的化石记录不完整,主要限于特殊的Lagerstätten沉积物。在雅哈廷达的勘探中,发现了16块来自普林斯巴赫阶和托阿西亚阶地层的吸血虫化石,使其成为特提斯洋(欧洲和中东)以外发现的侏罗纪最大的吸血虫存款。在这里,我们提出了Ya Ha Tinda Vamppyropoda标本的分类学分析和第一个来自北美的侏罗纪Vamppyropoda的全面研究。总共有14个标本有足够的细节保存在剑器上进行分类描述。其中两个标本仅属于Loligosepiina亚目(一个属于Geopeltidae科),而其余的标本被鉴定为属级:6个Paraplesioteuthis,3个Loligosepia,1个Geopeltis,1个Parabelopeltis和1个Jeletzkyteuthis。Loligosepia cf.的发现。aalensis在Pliensbachian地层中的发现将该分类群的最早出现时间从Toarcian早期推回到Pliensbachian晚期。除了Paraplesioteuthis,这是第一次在欧洲以外的侏罗纪发现这些属;因此,这项研究显着扩大了他们的古地理范围。此外,利用已建立的高分辨率生物和化学地层学,可以将标本分配到菊石区,并将其置于全球Toarcian海洋事件的背景下。
The Ya Ha Tinda Lagerstätte from Alberta, Canada, is the first Jurassic marine Konservat‐Lagerstätte from North America and hosts a substantial collection of exceptionally preserved fossil Vampyropoda specimens. Vampyropods are soft‐bodied cephalopods (coleoids) characterized by eight arms and an internalized chitinous shell (gladius). Due to their lack of hard parts, Vampyropoda have a fragmentary fossil record, largely limited to exceptional Lagerstätten deposits. Excavations at Ya Ha Tinda have uncovered 16 vampyropod fossils from Pliensbachian and Toarcian strata, making it the largest deposit of Vampyropoda found outside the Tethys Ocean (Europe and the Middle East) for the Jurassic. Here, we present a taxonomic analysis of the Ya Ha Tinda Vampyropoda specimens and the first comprehensive study of Jurassic vampyropods from North America. In total, 14 specimens have sufficient details preserved on the gladius for taxonomic description. Two specimens are identifiable only to the suborder Loligosepiina (one to the family Geopeltidae), while the remaining specimens are identified to the genus level: six Paraplesioteuthis, three Loligosepia, one Geopeltis, one Parabelopeltis and one Jeletzkyteuthis. The discovery of Loligosepia cf. aalensis within Pliensbachian strata pushes back the earliest occurrence of this taxon from the early Toarcian to the late Pliensbachian. With the exception of Paraplesioteuthis, this is the first time these genera have been found outside of Europe for the Jurassic; therefore, this study significantly expands their palaeogeographical range. Furthermore, with established high‐resolution bio‐ and chemostratigraphy, specimens can be assigned to ammonite zones and placed in the context of the global Toarcian Oceanic Anoxic Event.
托阿尔西亚海洋缺氧事件的公开海洋记录
DOI: 10.5194/sed-3-385-2011
发表时间: 2011
期刊: --
影响因子: --
作者:
Gröcke D
通讯作者: Gröcke D
加拿大艾伯塔省亚哈廷达的一个新的早侏罗世(约 183 Ma)化石 Lagerstätte
DOI: 10.1130/g38808.1
发表时间: 2017
期刊: Geology
影响因子: 5.8
作者:
Martindale, Rowan C.;Them, Theodore R.;Gill, Benjamin C.;Marroquín, Selva M.;Knoll, Andrew H.
通讯作者: Knoll, Andrew H.
Panthalassa 东北部大型底栖动物群落对 Toarcian 海洋缺氧事件的响应(加拿大艾伯塔省亚哈廷达)
DOI: 10.1016/j.palaeo.2017.01.009
发表时间: 2017
期刊: Palaeoecology
影响因子: --
作者:
Martindale, Rowan C.;Aberhan, Martin
通讯作者: Aberhan, Martin
DOI: 10.1016/j.epsl.2011.04.013
发表时间: 2011-07-01
影响因子: 5.3
作者:
Caruthers, Andrew H.;Groecke, Darren R.;Smith, Paul L.
通讯作者: Smith, Paul L.