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
中科院分区:
文献类型:
--
作者:
S. Marroquín;R. Martindale;D. Fuchs
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.
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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
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.
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
影响因子:
5.3
作者:
Caruthers, Andrew H.;Groecke, Darren R.;Smith, Paul L.
通讯作者:
Smith, Paul L.