Guangweicaris

Guangweicaris; Temporal range: Cambrian Stage 4 PreꞒ Ꞓ O S D C P T J K Pg N ↓
	YKLP 11141 largely complete specimen in dorsal view
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Order:	†Fuxianhuiida
Family:	†Fuxianhuiidae
Genus:	†Guangweicaris; Luo, Fu, and Hu in Luo et al., 2007
Type species
	Guangweicaris spinatus; Luo, Fu, and Hu in Luo et al., 2007

Guangweicaris is an extinct genus of fuxianhuiid arthropod known from the Cambrian period. It is only known from the type species Guangweicaris spinatus, which is known from the Cambrian Stage 4 Guanshan Biota near Kunming. It is currently the latest known fuxianhuiid. It was first described in 2007,[1] and was given a comprehensive re-description in 2020.[2] It is currently known from over 150 specimens. Within the fuxianhuiids it is sister to Fuxianhuia, together forming the clade Fuxianhuiidae. In comparison to Fuxianhuia it has a wide, oval shaped opisthothorax and a proportionally longer, narrow tail-like abdomen, with 3 prothoracic tergites, 5 opisthothoracic tergites and 7 abdominal tergites, it also possesses a row of spines running down the central axis of the body from the second opisthothoracic tergite.[2]

Restoration

Additional specimens

Phylogeny

From [3]

Fuxianhuiida

	Shankouia

	Liangwangshania

Chengjiangocarididae

	Alacaris

	Chengjiangocaris

Fuxianhuiidae

	Fuxianhuia

	Guangweicaris

References

H.-L. Luo, X.-P. Fu, S.-X. Hu, Y. Li, S.-G. Hou, T. You, J.-Y. Pang and Q. Liu. 2007. A New Arthropod, Guangweicaris Luo, Fu et Hu gen. nov. from the Early Cambrian Guanshan Fauna, Kunming, China. Acta Geologica Sinica 81:1-7
Chen, Hong; Legg, David; Liu, Yu; Hou, Xian-guang (2020). "New data on the anatomy of fuxianhuiid arthropod Guangweicaris spinatus from the lower Cambrian Guanshan Biota, Yunnan, China". Acta Palaeontologica Polonica. 65. doi:10.4202/app.00508.2018.
Yang, Jie; Ortega-Hernández, Javier; Legg, David A.; Lan, Tian; Hou, Jin-bo; Zhang, Xi-guang (2018-02-01). "Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods". Nature Communications. 9 (1). doi:10.1038/s41467-017-02754-z. ISSN 2041-1723. PMID 29391458.

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[1] H.-L. Luo, X.-P. Fu, S.-X. Hu, Y. Li, S.-G. Hou, T. You, J.-Y. Pang and Q. Liu. 2007. A New Arthropod, Guangweicaris Luo, Fu et Hu gen. nov. from the Early Cambrian Guanshan Fauna, Kunming, China. Acta Geologica Sinica 81:1-7

[:0-2] Chen, Hong; Legg, David; Liu, Yu; Hou, Xian-guang (2020). "New data on the anatomy of fuxianhuiid arthropod Guangweicaris spinatus from the lower Cambrian Guanshan Biota, Yunnan, China". Acta Palaeontologica Polonica. 65. doi:10.4202/app.00508.2018.

[3] Yang, Jie; Ortega-Hernández, Javier; Legg, David A.; Lan, Tian; Hou, Jin-bo; Zhang, Xi-guang (2018-02-01). "Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods". Nature Communications. 9 (1). doi:10.1038/s41467-017-02754-z. ISSN 2041-1723. PMID 29391458.