Line Of Three Foulonia Trilobites With Asaphid - Migratory Behavior?

This is a really cool specimen featuring three Foulonia trilobites lined up in a perfect line. These lines of trilobites are frequently seen in certain layers of the Fezouata Formation. There is been a lot of speculation based on material from this site, that this represents preserved trilobite migratory behavior (paper linked below).

In addition to the three Foulonia there is also an unidentified Asaphid facing the other direction. Nice preparation work on this piece with just some minimal restoration along a repaired crack.

480-million-year-old trilobite ‘traffic jams' may reveal ancient migratory behavior

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.

More About Trilobites