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Fig. 21 | Frontiers in Zoology

Fig. 21

From: New insights into the evolution of portunoid swimming crabs (Portunoidea, Heterotremata, Brachyura) and the brachyuran axial skeleton

Fig. 21

Examples showing character states concerned with the origin of the ventral basi-ischium muscles of the 2nd pereiopod and 3rd pereiopod (character 28) in axial skeletons seen from different perspectives. A Dromiidae (Podotremata), B Cancridae (Cancroidea), C, D Carcinidae (Portunoidea). IntPl interopleurite (with number pair indicating thoracomeres between which it is situated), IntSt interosternite (with number pairs indicating thoracomeres between which it is situated), MP median plate, VentrBas P2 2nd pereiopod ventral basi-ischium muscle, VentrBas P3 3rd pereiopod ventral basi-ischium muscle

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Frontiers in Zoology

ISSN: 1742-9994