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Fig. 13 | BMC Evolutionary Biology

Fig. 13

From: The oldest described eurypterid: a giant Middle Ordovician (Darriwilian) megalograptid from the Winneshiek Lagerstätte of Iowa

Fig. 13

Pentecopterus decorahensis, prosomal appendage VI. a SUI 139945, coxa. b SUI 139987, damaged coxa. c SUI 139994, coxa with gnathobase compressed into ‘neck’. d SUI 139997, podomeres 5–6 showing distal denticulations. e SUI 139993, lateral portion of sixth podomere showing attachment point for preceding podomere. f SUI 139961, isolated sixth podomere. g SUI 139967, isolated sixth podomere. AP = attachment point, DD = distal denticulation, GN = gnathobase, NE = ‘neck’, VP = ventral projection. Scale bars = 10 mm

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BMC Ecology and Evolution

ISSN: 2730-7182

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