Platyscutellum sp

Trilobites Order Corynexochida, Suborder Illaenina, Superfamily Illaenoidea, Family Styginidae
Geologic Age: Middle Devonian
Trilobite is 46 mm long
Hamar Laghdad, Zerg, Morocco
Remarks: Note the axial Spines. Platyscutellum is distinguished from Scutellum by the ribbing of the pygidium. Note also the holochroal eyes with many fine facets. Holochrocal eyes have a very tight hexagonal packing of small facets with a single corneal layer covering the many lenses. Many living arthropods have compound eyes that are very sensitive to motion. It is presumed that these were as well, enabling them to quickly spot an approaching predator - trilobites putatively adapted this trait early in evolution.

Also see: Moroccan Trilobites








Platyscutellum trilobite holochroal eye:

Platyscutellum holochroal eye

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