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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