description Pterocephalia Overview
Pterocephalia is an extinct genus of Late Cambrian trilobites assigned to the family Pterocephaliidae. Fossils are known from North American deposits. The genus is distinguished by a broad pygidium, the terminal body shield of a trilobite, with prominent marginal and pleural spines. These features make Pterocephalia useful for comparing the morphology and distribution of ptychopariid trilobites in Late Cambrian fossil assemblages.
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