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Table 2 Hoplitaspis hiawathai carapace morphology measurements

From: A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within Chasmataspidida

Specimen

Carapace

Lateral eye

Median ocelli

Length

Width

Length

Width

Length

Width

UWGM 1840B

13

15

UWGM 1863

14

10*

3

1

UWGM 1873A

29

37

8

4

1

1

UWGM 1875

23*

32*

UWGM 1877

23

26

5

2

1

1

UWGM 1880

11*

12*

UWGM 2041

15*

17*

UWGM 2044A

11

12*

UWGM 2044B

12

13

UWGM 2069B

18

18*

4

2

UWGM 2268

25

33

4

2

UWGM 2273A

11*

17*

5

3

UWGM 2273D

13*

5*

5

3

UWGM 2279A

15*

9*

UWGM 2279B

15

18

2

1

0.5

0.5

UWGM 2279C

15

16

4

1

UWGM 2700

21

24

6

3

1

1

  1. All measurements in millimetres. Asterisk (*) indicates an incomplete measurement