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Table 8 Pentecopterus decorahensis mesosoma tergite measurements

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

Specimen

1

2

3

4

5

6

SUI 139931

50/123

60/88a

SUI 139932

70/85

SUI 139943

16/44a

15/40a

18/40a

SUI 139947

14/22a

22/41a

25/71a

26/43a

SUI 139950

70/106a

SUI 139954

19a/30a

16a/29a

SUI 139980

51a/100a

SUI 140005

69a/47a

SUI 140006

55a/68a

43a/65a

SUI 140015

104/140a

SUI 140017

33/54

44/54

  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