description Fieldaspis Overview
Fieldaspis is an extinct genus of Cambrian corynexochid trilobites assigned to the family Fieldaspididae. Descriptions characterize it as small to moderate in size, with a gently convex cranidium, a low glabella with weak furrows, and an occipital ring that may carry a median spine. Fossils and possible occurrences are recorded from Cambrian rocks in western North America, including Nevada, California, and the Canadian Rocky Mountains.
help Fieldaspis FAQ
What kind of trilobite was Fieldaspis?
Fieldaspis was an extinct Cambrian corynexochid trilobite genus assigned to the family Fieldaspididae. It was generally small to moderate in size.
What did the Fieldaspis head shield look like?
Descriptions characterize its cranidium as gently convex, with a low glabella and weak furrows. The occipital ring may carry a median spine, a feature useful for comparing specimens.
When did Fieldaspis live?
Fieldaspis lived during the Cambrian Period, when trilobites were major members of marine ecosystems. The genus is known from Cambrian fossil descriptions rather than from living descendants.
How is Fieldaspis identified from other corynexochid trilobites?
Paleontologists examine the cranidium, glabella, furrows, occipital ring, and any median spine. Those head-shield details help separate Fieldaspis from similar small corynexochid genera.
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