Incredible piece with several trilobites of ± 20.2 x 11.8 cm, very well preserved, has good relief of the rock and is very well prepared. The trilobites of this formation often have very colorful preservation, due to the oxidation of iron pyrite (limonite) after the fossils were deposited. It is not uncommon in this formation to find the trilobites by changing the shell (ecdysis), as seen in the trilobite below. The plate is split but does not affect the trilobites.
Foulonia sp. (METOPILEKIA)
Ordovicico, 470 M.A, Fezouta Formation
Ouled Slimane, Morocco
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