Bailongia

{{Short description|Extinct genus of arthropod}} {{Speciesbox | fossil_range = {{fossilrange|Cambrian Stage 4}} | image = Bailongia.png | parent_authority = Jiao et al. 2021 | display_parents = 2 | genus = Bailongia | species = longicaudata | authority = Jiao et al. 2021 }}

'''''Bailongia''''' is an extinct genus of arthropod known from a single species '''''Bailongia longicaudata''''' (''longicaudata'' from Latin: "long-tailed") found in the Cambrian Stage 4 aged Guanshan Biota of Yunnan, China. It was around 5mm long and had a large head shield, nine overlapping tapering tergites and a relatively elongate tailspine. It has been recovered in a relatively basal position within Artiopoda, more derived than ''Squamacula'' or Protosutura, but outside Trilobitomorpha or Vicissicaudata.<ref name=":0">{{Cite journal |last1=Jiao |first1=De-Guang |last2=Du |first2=Kun-Sheng |last3=Zhang |first3=Xi-Guang |last4=Yang |first4=Jie |last5=Eggink |first5=Daniel |date=May 2022 |title=A new small soft-bodied non-trilobite artiopod from the Cambrian Stage 4 Guanshan Biota |journal=Geological Magazine |language=en |volume=159 |issue=5 |pages=730–734 |doi=10.1017/S0016756821001254 |s2cid=245238634 |issn=0016-7568|doi-access=free |bibcode=2022GeoM..159..730J }}</ref>

== Phylogeny == After Jiao et al. 2021.<ref name=":0" />

{{clade|style=font-size:85%; line-height:85%|label1=Artiopoda|{{clade |1=''Squamacula clypeata'' |2={{clade |label1=Protosutura |1={{clade |1={{clade |1=''Zhiwenia coronata'' |2=''Australimicola spriggi'' }} |2={{clade |1=''Acanthomeridion serratum'' |2=''Acanthomeridion anacanthus'' }} }} |2={{clade |label2=Trilobitomorpha |label3=Vicissicaudata |1='''''Bailongia longicaudata''''' |2={{clade |1=''Retifacies abnormalis'' |2={{clade |1={{clade |1={{clade |1=''Kwanyinaspis maotiashanensis'' |label2=Trilobita |2={{clade |1=''Olenoides serratus'' |2=''Eoredlichia intermedia'' }} }} |label2=Conciliterga |2={{clade |1=''Haifengella corona'' |2={{clade |1={{clade |1=''Kuamaia lata'' |2=''Helmetia expansa'' }} |2={{clade |1=''Tegopelte gigas'' |2=''Skioldia aldna'' |3=''Saperion glumaceum'' }} }} }} }} |2={{clade |label1=Xandarellida |label2=Nektaspida |1={{clade |1=''Cindarella eucalla'' |2={{clade |1=''Luohuilinella deletres'' |2=''Luohuilinella rarus'' |3={{clade |1=''Sinoburius lunaris'' |2={{clade |1=''Xandarella spectaculum'' |2=''Phytophilaspis pergamena'' }} }} }} }} |2={{clade |1=''Buenaspis forteyi'' |2={{clade |1=''Tariccoia arrusensis'' |2=''Soomaspis splendida'' |3=''Liwia convexa'' }} |3={{clade |1=''Naraoia spinosa'' |2={{clade |1=''Naraoia compacta'' |2=''Misszhouia longicaudata'' }} }} }} }} }} }} |3={{clade |1=''Sidneyia inexpectans'' |2={{clade |1=''Emeraldella brocki'' |label2=Cheloniellida |2={{clade |1=''Cheloniellon calmani'' |2={{clade |1=''Triopus draboviensis'' |2=''Duslia insignis'' }} }} |3={{clade |1=''Kodymirus vagans'' |2={{clade |1=''Eozetetes gemmelli'' |label2=Aglaspidida |2={{clade |1=''Beckwithia typa'' |2={{clade |1={{clade |1=''Chlupacaris dubia'' |2={{clade |1=''Quasimodaspis brentsae'' |2={{clade |1=''Tremaglaspis unite'' |2={{clade |1=''Tremaglaspis vanroyi'' |2=''Brachyaglaspis singularis'' }} }} }} |3={{clade |1=''Cyclopites vulgaris'' |2=''Australaglaspis stonyensis'' |3={{clade |1=''Uarthrus instabilis'' |2=''Flobertia kochi'' |3={{clade |1=''Aglaspella granulifera'' |2={{clade |1=''Gogglops ensifer'' |2={{clade |1=''Glypharthrus simplex'' |2=''Aglaspis spinifer'' }} }} |3={{clade |1=''Chraspedops modesta'' |2={{clade |1=''Glypharthrus thomasi'' |2={{clade |1=''Glypharthrus trispinicaudatus'' |2=''Glypharthrus magnoculus'' }} }} }} }} }} }} }} }} }} }} }} }} }} }} }} }}}}

== References == {{Reflist}}

Category:Artiopoda Category:Cambrian arthropods of Asia Category:Cambrian China Category:Paleontology in Yunnan Category:Fossil taxa described in 2021 Category:Cambrian genus extinctions Category:Monotypic artiopod genera