last revised 28 DEC 2007 by S. M. Gon III

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Compare the pictorial approach above with the purely descriptive narration below:

Superfamily Odontopleuroidea 

Introduction: typically very spinose and densely sculptured trilobites.
Cephalon: convex; glabella tapering forward or subparallel, extending to anterior margin or nearly so, less complex lobation than in Lichoidea; eye ridges run from anterior end of glabella to palpebral lobe; opisthoparian sutures, often placed on sutural ridges; distinct notch in margin of free cheek adjacent to where anterior sutures cut cephalic margin; facial sutures secondarily lost in some genera; short genal spines typically present.
Thorax: 8 – 10 segments; tips of each bear 2 – 3 pairs of spines (anterior pair often difficult to see, ventrally directed); often with symmetrical row arrangements of pleural spines or tubercles. 
Pygidium: micropygous, short, transverse, with 2 – 3 axial rings (3rd often faint), one or more pairs of tubular border spines, the largest of which connected to first axial ring by prominent ridge. 

Here are some representatives of Odontopleuroidea

Boedaspis Chlustinia Ceratonurus

Miraspis Kettneraspis Dicranurus

LICHIDA includes three Superfamilies

click me to view superfamily guide


click me to view superfamily guide


click me to view superfamily guide

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