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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: 168 million years old “marine lice” and the evolution of parasitism within isopods

Fig. 4

Reconstructed surface models of the fossil isopod Urda rostrata and modern isopod Nerocila acuminata. Abbreviations: tp = first thoracopods, mxp = maxillipeds, mxa = maxillae, uc = unclear mouth part, md = mandibles, pg = paragnaths, lb = labrum. a 1-5, 7 Functional head of U. rostrata specimen 2 (BPSG 2011I51) with the first free thorax segment, successively one appendage removed from posterior to anterior, ventral view. a 6 Functional head of U. rostrata specimen 1 (BPSG 2011I50). b 1-7 Mouthparts of U. rostrata specimen 2. b 1) Tp. b 2) Mxp. b 3) Mxa. b 4) Uc. b 5) Md. b 6) Pg. b 7) Lb. c 1-3 Mouthparts of U. rostrata specimen 2, from different angles. d 1-5) Functional head of N. acuminata, successively one appendage removed from posterior to anterior, ventral view. Not to scale

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