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Leonaspis

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description Leonaspis Overview

Leonaspis is an extinct genus of odontopleurid trilobites that existed from the Late Ordovician through the Devonian periods. Fossils of this genus have been unearthed in various locations, including marine sedimentary deposits across Europe, North America, and North Africa. It is physically characterized by a heavily spined exoskeleton, bearing multiple marginal, pleural, and caudal spines that cover its body. Collectors and researchers frequently encounter well-preserved Leonaspis specimens in the Devonian strata of Morocco.

help Leonaspis FAQ

What geological age is Leonaspis from?

Leonaspis ranged from the Late Ordovician through the Devonian period. That gives the genus a fossil record spanning well over one major Paleozoic interval rather than a single short-lived species horizon.

Why does Leonaspis have so many spines?

The spines may have helped deter predators and spread the animal's weight across soft sea-floor sediment, although their exact function varied among species. Leonaspis belonged to Odontopleuridae, a trilobite family especially known for heavily spined exoskeletons.

Where have Leonaspis fossils been found?

Specimens are known from marine deposits in Europe, North America, and North Africa. A locality and rock layer are important for identification because many odontopleurid trilobites share a generally spiny appearance.

How is Leonaspis different from Selenopeltis?

Both are spiny odontopleurid trilobites, but they are separate genera with different combinations of cephalic, thoracic, and pygidial spines. An isolated spine is rarely enough for a secure identification, so a complete head or tail is much more useful.

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