Fig. 12From: The oldest described eurypterid: a giant Middle Ordovician (Darriwilian) megalograptid from the Winneshiek Lagerstätte of Iowa Pentecopterus decorahensis, prosomal appendage V. a SUI 139998, podomeres 2–9 showing distal podomere serrations and distribution of setal follicles. b SUI 140016, podomeres 2–7. V-2–V-9 = podomeres 2–9, DD = distal denticulation, FO = follicles, FS = fixed spine. Scale bars = 10 mmBack to article page