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.^[1]

Quick Facts Scientific classification, Binomial name ...

Bailongia Temporal range: Cambrian Stage 4 PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
(unranked):	†Artiopoda
Genus:	†Bailongia Jiao et al. 2021
Species:	†B. longicaudata
Binomial name
†Bailongia longicaudata Jiao et al. 2021

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After Jiao et al. 2021.^[1]