last revised 15 July 2007 by S. M. Gon III

Superfamily Proetoidea
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Compare the pictorial approach above with the descriptive narrative below:

Superfamily Proetoidea
Cephalon: opisthoparian sutures, glabella tapering or inverse pyriform, mostly suboval, with 3-4 pairs of lateral furrows, sometimes indistinct (Proetidae), or glabella long, expanding forward to anterior border furrow or beyond, with lateral preoccipital lobes present (Phillipsiidae); eyes, when present, typically holochroal, convex; fixigenae narrow, librigenae broad, except in blind species; hypostoma typically natant, but secondarily conterminent in advanced Proetidae; genal angle spined or blunt rounded.
Thorax: 8-10 segments, typically 10 in Protetidae, 9 in Phillipsiidae, pleurae with furrows, tips blunt or spined.
Pygidium: typically semicircular, with few segments, but some large, long, parabolic, with up to 33 axial segments; margin typically smooth, but some with terminal axial spine or pleural spines.
Families: Phillipsiidae, Proetidae
Representative Genera: Ameura, Basidechenella, Bollandia, Cornuproetus, Cummingella, Cyphoproetus, Dechenella, Decoroproetus, Ditomopyge, Eremiproetus, Griffithides, Humilogriffithides, Neogriffithides, Paraphillipsia, Phillipsia, Prantlia, Proetidella, Proetus, Pseudophillipsia, Warburgella, Weberides

Here are some representative Proetoidea

Phillipsia Cornuproetus Phaetonellus Cyphoproetus

PROETIDA includes three Superfamilies:
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Walking Trilobite animation ©2000 by S. M. Gon III
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