Authors
Robert J O'Flynn, Mark Williams, Mengxiao Yu, Jin Guo, Denis Audo, Michel Schmidt, Huijuan Mai, Yu Liu, Gregory D Edgecombe
Publication date
2024/5
Journal
Papers in Palaeontology
Volume
10
Issue
3
Pages
e1556
Description
Bushizheia yangi O'Flynn & Liu, a euarthropod from the lower Cambrian (Series 2, Stage 3) Chengjiang Konservat‐Lagerstätte, possesses both raptorial frontal appendages sharing traits with stem‐group euarthropods, and deuteropodan characters shared by all extant euarthropods (e.g. dorsal arthrodization and arthropodization of all limbs). Microtomography of new specimens of Byangi shows previously unknown details of head morphology: a six‐segmented head composed of an ocular segment that carries diminutive paired stalked eyes, a post‐ocular segment with deutocerebral frontal appendages, and four subsequent cephalic segments each bearing a pair of appendages. The phylogenetic position of Byangi in the euarthropod stem‐group adds support to a six‐segmented head being an ancestral state for Deuteropoda. This study also reports the first occurrence of possible eggs closely associated with …
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