description Bristolia Overview
Bristolia is an extinct genus of olenellid trilobites from the Early Cambrian of western North America. It is particularly associated with fossil-bearing strata in Nevada and California and is recognized by the long genal spines extending from the sides of its cephalon. The genus is used in work on early trilobite evolution and the regional biostratigraphy of Cambrian rocks.
help Bristolia FAQ
When did Bristolia live?
Bristolia lived during the Early Cambrian. It belongs to the olenellid trilobites, an early branch of trilobite evolution.
What feature identifies Bristolia?
Bristolia is recognized for the long genal spines extending from the sides of its cephalon. The cephalon is the trilobite’s head shield.
Where are Bristolia fossils found?
The genus is particularly associated with fossil-bearing strata in Nevada and California. These western North American rocks preserve important Early Cambrian olenellid faunas.
Is Bristolia related to Olenellus?
Yes. Both Bristolia and Olenellus are olenellid trilobites from the Early Cambrian. They are compared because they share the early olenellid body plan, although Bristolia has its own distinctive cephalic spines.
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