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Fig. 6 | BMC Evolutionary Biology

Fig. 6

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

Fig. 6

Pentecopterus decorahensis, cuticular structures on prosomal appendages. a SUI 139963, juvenile appendage showing denticulations of podomere margin and dorsal row of scales. b SUI 139951, coxa of appendage III with dense covering of conical scales. c SUI 139952, fourth podomere of appendage III showing raised scales with apical follicle. d SUI 139913, coxa of appendage V exhibiting dense covering of small scales. e SUI 139945, coxa of appendage VI with large scales. f SUI 139949, third to fifth podomeres of appendage VI with scattered small scales. Scale bars = 1 mm

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