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Table 9 Pentecopterus decorahensis metasoma tergite and telson measurements

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

Specimen 7 8 9 10 11 12 Telson
SUI 139955 32/58 28/55 28/51 40/46
SUI 139956 80/26
SUI 139957 70a/28
SUI 139962 20/82a
SUI 139971 49/34a
SUI 139974 29/29a
SUI 139976 19/61 16/52a
SUI 140002 12a/33a
SUI 140004 28a/41a
  1. Length/width. All measurements in millimetres. Isolated tergites were assigned to a segment based on size and differences in ornamentation
  2. aindicates an incomplete measurement