Fig. 2From: A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within ChasmataspididaHoplitaspis hiawathai, UWGM 1873 – three almost complete specimens. a Dorsal view of UWGM 1873A (holotype; largest specimen), preserving prosomal shield, buckler, and postabdomen. Note the ventral buckler plate underlying tergite 2–4 in UWGM 1873B (central specimen). UWGM 1873C, displaying the buckler and seven postabdominal segments, is on the right. b Ventral view of UWGM 1873A, showing the coxa, metastoma, and ventral buckler plate. Scale bar = 10 mmBack to article page