Fig. 6
From: Palaeontological and Molecular Evidence Linking Arthropods, Onychophorans, and other Ecdysozoa
Fuxianhuia protensa, a stem group arthropod from the early Cambrian Chengjiang Lagerstätte, China (photos by Lars Ramsköld). a complete specimen, b head and anterior part of trunk, showing small first (H1) and larger second (H2) head sclerites, the former bearing eyes (e); c posterior part of trunk, with tergites partly prepared away to expose thoracic appendages with multisegmented inner branch (en endopod) and flap-like outer branch (ex exite)