Diacanthaspis maquoketensis

Order Odontopleurida / Family Odontopleuridae

di-, Greek, double; acantha, Greek, spine; aspis, Greek, shield

maquoket, Maquoketa, a locality in the USA

Ceratocephala maquoketensis

Surface densely covered with nodes of varying size. Cranidium subtrapezoidal; glabella subrectangular; occipital ring with an occipital node and two pairs of occipital spines extending backward-laterally on the posterior margin; fixigenae subtriangular in the palpebral area, rather long; palpebral lobes opposite L1; eye ridges long; librigenae subtriangular, lateral border possibly with 14 marginal spines, genal spines long. Thorax with at least 9 segments; axial rings subrectangular, surface with nearly transversely arranged coarse nodes; thoracic pleurae divided by pleural furrows into anterior and posterior bands; anterior pleural spines short, posterior ones long, the posterior spines pointing more strongly backward. Pygidium of unknown characters.