Guangweicaris

{{Short description|Extinct genus of arthropods}}

{{Automatic taxobox

| fossil_range = {{fossil range|Cambrian Stage 4}}

| type_species = Guangweicaris spinatus

| type_species_authority = Luo, Fu, and Hu in Luo et al., 2007

| image = Guangweicaris fossil2.png

| image_caption = YKLP 11141 largely complete specimen in dorsal view

| taxon = Guangweicaris

| authority = Luo, Fu, and Hu in Luo et al., 2007

}}

File:Guangweicaris restoration.png

File:Guangweicaris fossil1.png

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,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 and was given a comprehensive re-description in 2020.{{Cite journal|last1=Chen|first1=Hong|last2=Legg|first2=David|last3=Liu|first3=Yu|last4=Hou|first4=Xian-guang|date=2020|title=New data on the anatomy of fuxianhuiid arthropod Guangweicaris spinatus from the lower Cambrian Guanshan Biota, Yunnan, China|url=http://www.app.pan.pl/article/item/app005082018.html|journal=Acta Palaeontologica Polonica|volume=65|doi=10.4202/app.00508.2018|doi-access=free}} 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.