Pictorial Guide to the Trilobite Order Proetida

PICTORIAL GUIDE
TO THE ORDER PROETIDA
last revised 15 July 2007 by S. M. Gon III

Superfamily Proetoidea

Click here to return to Proetida Fact Sheet

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:
(click on the images to view the pictorial guides)

Proetoidea

Phillipsia

Aulacopleuroidea

Aulacopleura

Bathyuroidea

Bathyurus

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