PICTORIAL GUIDE
TO THE ORDER ASAPHIDA
last revised 03 March 2015 by S. M. Gon III
ORDER ASAPHIDA
    Superfamily Anomocaroidea
    Superfamily Asaphoidea
    Superfamily Cyclopygoidea
    Superfamily Trinucleioidea
    Superfamily Dikelokephaloidea
    Superfamily Remopleuridoidea

Superfamily Remopleuridoidea
diagnostic characters boldfaced:
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Here are representative members of the Remopleuridoidea:

Remopleurides Robergia

Compare the pictorial approach above to the narrative equivalent below (salient features in color):

Superfamily Remopleuridoidea
Cephalon: with opisthoparian sutures, glabella bulges tranversely anterior of occipital ring, with up to 3 pairs lateral furrows, eyes medium to very large, with narrow, wire-like socle, palpebral rims inflated, deep rim furrows, extending into axial furrows anteriorly; genal spines present.
Thorax: 9-12 segments, axis convex, pleural furrows diagonal, pleural tips typically point backward.
Pygidium: with spinose margin, spines flattened, united at bases, extending to axis; convex axis not extending to posterior margin, pleural field flat, typically furrowed and backward curving. Surface variously sculptured or granulose.
Families: Remopleurididae, Kainellidae, Opipeuteridae, Bohemillidae, Auritamiidae, Idahoiidae, Hungaiidae.
Representative Genera: Amphitryon, Apatokephalus, Auritamia, Bohemillia, Hungaia, Hypodicranotus, Idahoia, Kainella, Macropyge, Pseudokainella, Remopleurides, Richardsonella, Robergia.

Other notes: Dikelokephaloidea is thought of as the sister group to Remopleurididoidea

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Walking Trilobite animation 2000 by S. M. Gon III 
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