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Fig. 7 | BMC Evolutionary Biology

Fig. 7

From: Mandibulate convergence in an armoured Cambrian stem chelicerate

Fig. 7

Convergences in head anatomy and morphology between Habelia (a) and selected mandibulates, in this case Ianiropsis sp. (Malacostraca: Isopoda; b; © Buz Wilson, Australian Museum) and Henicops washpoolensis (Myriapoda: Chilopoda; c; image provided by G. Edgecombe). Colours highlight the morpho-functional correspondence between sensory appendages (exopods in Habelia vs. antennae in mandibulates; green), masticatory appendages (gnathobases in Habelia vs. mandibles and maxillae in mandibulates; orange) and complimentary appendages aiding in food manipulation (seventh head appendage in Habelia vs. maxillipeds in mandibulates; blue). Note that masticatory appendages in Henicops are hidden by the large coxosternites of the maxillipeds

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