1.65" Onnia Trilobite - Long Occipital Spine

This is a nice 1.65" specimen of Onnia superba collected near Blekos, Morocco. The distinctive, large cephalon covered in large pits can easily be seen. It's thought that this aided in filtering food out of the water, trapping microscopic food particles in the pits.

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 with over 25k currently described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left an excellent fossil record.
DETAILS
SPECIES
Onnia superba
LOCATION
Blekos, Morocco
SIZE
1.65" long (including spines)
SUB CATEGORY
ITEM
#119872
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