A xandarellid artiopodan from Morocco - a middle Cambrian link between soft-bodied euarthropod communities in North Africa and South China

被引：13

作者：

Ortega-Hernandez, Javier ^{[1
]}

Azizi, Abdelfattah ^{[2
]}

Hearing, Thomas W. ^{[3
,4
]}

Harvey, Thomas H. P. ^{[3
]}

Edgecombe, Gregory D. ^{[5
]}

Hafid, Ahmid ^{[2
]}

El Hariri, Khadija ^{[2
]}

机构：

[1] Univ Cambridge, Dept Zool, Downing St, Cambridge CB2 3EJ, England

[2] Univ Cadi Ayyad, Fac Sci & Tech Gueliz, Dept Sci Terre, Ave Abdelkrim El Khattabi BP 549, Marrakech 40000, Morocco

[3] Univ Leicester, Dept Geol, Univ Rd, Leicester LE1 7RH, Leics, England

[4] British Geol Survey, Keyworth NG12 5GG, Notts, England

[5] Nat Hist Museum, Dept Earth Sci, Cromwell Rd, London SW7 5BD, England

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

关键词：

BAY SHALE LAGERSTATTE; SIRIUS PASSET FAUNA; BURGESS SHALE; LOWER ORDOVICIAN; CHENGJIANG LAGERSTATTE; KONSERVAT-LAGERSTATTE; AGLASPIDID ARTHROPOD; BIVALVED ARTHROPODS; BRITISH-COLUMBIA; HIGH ATLAS;

D O I：

10.1038/srep42616

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Xandarellida is a well-defined clade of Lower Palaeozoic non-biomineralized artiopodans that is exclusively known from the early Cambrian (Stage 3) Chengjiang biota of South China. Here we describe a new member of this group, Xandarella mauretanica sp. nov., from the middle Cambrian (Stage 5) Tatelt Formation of Morocco, making this the first non-trilobite Cambrian euarthropod known from North Africa. X. mauretanica sp. nov. represents the youngest occurrence of Xandarellida-extending its stratigraphic range by approximately 10 million years - and expands the palaeobiogeographic distribution of the group to the high southern palaeolatitudes of West Gondwana. The new species provides insights into the lightly sclerotized ventral anatomy of Xandarellida, and offers stratigraphically older evidence for a palaeobiogeographic connection between Burgess Shale-type euarthropod communities in North Africa and South China, relative to the (Tremadocian) Fezouata biota.

引用

页数：13

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