Flying Crotalocephalina Trilobite with Reedops - Foum Zguid, Morocco

This is a natural association of two different Lower Devonian trilobites from the Assa Formation of Foum Zguid, Morocco. There is a Crotalocephalina and a Reedops trilobite. Both are nicely inflated and the Crotalocephalina has been prepared in a "flying" pose by removing nearly all of the surrounding limestone. This leaves it floating above the rock on a pedestal. The preparation takes a lot of time but the results are quite spectacular.

The Reedops is missing its pygidium and measures 2.4", and the Crotalocephalina would be about 3.3" if outstretched. There is a patch of restoration on the cephalon of the Crotalocephalina and the Reedops has a repaired crack through its cephalon.

Trilobites were a very diverse group of extinct marine arthropods. They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago). They were one of the most successful of the early animals on our planet: over 25,000 species have been described, filling nearly every evolutionary niche. Due in large part to their hard exoskeletons (shells), they left an excellent fossil record.
Crotalocephalina sp. & Reedops sp.
Ma’der el Kebir, Foum Zguid, Morocco
Assa Formation
Crotalocephalina: 3.3" long (if outstretched), Entire piece: 3.3 x 2.8"
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