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Radiaspis

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description Radiaspis Overview

Radiaspis is an extinct genus of lichid trilobites that lived during the Devonian period. Fossils of this marine arthropod are commonly recovered from ancient reef deposits in Morocco, where they are often preserved in limestone. The genus is distinguished by an elaborate, ornate exoskeleton featuring long, radiating spines that extend from its glabella and thorax. Researchers and collectors recognize Radiaspis specimens by this complex, spiny morphology, which contrasts with the smoother shells of many other trilobite genera.

help Radiaspis FAQ

What age is the trilobite Radiaspis?

Radiaspis is a Devonian lichid trilobite. Its fossils are particularly associated with marine reef deposits, where limestone can preserve the ornate exoskeleton in fine detail.

Why does Radiaspis have such elaborate spines?

The radiating spines may have provided protection, increased the apparent body width, or helped stabilize the animal on the sea floor. Paleontologists cannot assign one function to every spine without studying the complete body and sediment around it.

Where are Radiaspis fossils most commonly found?

Morocco is especially well known for Devonian Radiaspis fossils, including specimens from limestone beds of the Anti-Atlas region. Moroccan trilobites are often prepared from dark or reddish Devonian rocks that preserve the spiny outline clearly.

How is Radiaspis different from Dicranurus?

Both are ornate Devonian lichid trilobites that collectors commonly associate with Moroccan fossils. Radiaspis is recognized for its radiating, heavily ornamented outline, while Dicranurus is better known for strongly horned or forked cephalic spines.

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