1.35" Trinucleid Trilobite (Declivolithus) - Mecissi, Morocco

This is a 1.35" wide specimen of the Trinucleid trilobite Declivolithus from Morocco. It has natural orange preservation due to the oxidation of iron pyrite which had replaced the fossil. The trilobite has excellent detail and comes with an acrylic display stand. There is a repaired crack running through the shale and the trilobite.

This trilobite has really dramatic cephalic pits along its "head shield". The exact purpose of these pits is unknown, but theories are that they could have had sensory purposes or aided in filter feeding.

An Upper Ordovician (Katian) Trilobite Fauna From the Lower Ktaoua Formation, Morocco

About Trilobites

Trilobites are an extinct class of marine arthropods that thrived for nearly 270 million years, from the early Cambrian to the end of the Permian period (around 521 to 252 million years ago). They are one of the most successful and diverse groups in the history of life, with over 25,000 described species spanning a wide range of sizes, shapes, and ecological niches. Known for their distinctive, segmented exoskeletons, trilobites provide invaluable insights into the evolutionary history of arthropods and the dynamics of ancient marine ecosystems.
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DETAILS
SPECIES
Declivolithus (Nankinolithus) titan
LOCATION
Mecissi, Morocco
FORMATION
Lower Ktaoua Formation
SIZE
1.35" wide on 4.7 x 3.6" shale
SUB CATEGORY
ITEM
#283764
GUARANTEE
We guarantee the authenticity of all of our specimens.