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Table 2 Pentecopterus decorahensis cheliceral measurements

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

Specimen Appendage I
SUI 139934 (podomere 3): Free finger, 14/5.
SUI 139935 (podomeres 1–3): Peduncle, 15/8. Fixed finger, 17/7. Free finger, 9/4.
SUI 139939 (podomeres 1–3): Peduncle, 10a/4a. Fixed finger, 23a/11. Free finger, 8a/4.
SUI 139952 (podomeres 1–3): Peduncle, 28/11. Fixed finger, 28/12. Free finger, 14/5.
SUI 139972 (podomeres 2–3): Fixed finger, 13/5. Free finger, 4/2.
SUI 139983 (podomeres 2–3): Fixed finger, 28/12. Free finger, 15/5.
  1. Length/width. All measurements in millimetres
  2. aindicates an incomplete measurement