Zilchovaspis rugosa Moroccan Trilobite

Georgously colorful due to mineral uptake in diagenesis

Zilchovaspis rugosa

Trilobites Order Phacopida, Family Dalmanitidae

Geological Time: Lower Devonian, Pragian Stage (~395 million years ago)

Size: Trilobite is 80 mm long

Fossil Site: Aatchana, Morocco

ZilchovaspisDescription: A elegant example of a member of the Order Phacopida, Family Dalmanitidae with many fine details present. While most frequently known in the trade as “Odontochile”, this one is actually Zilchovaspis. The most diagnostic features of this taxon are the parabolic cephalon and pygidial spine. Odontochile has a more circular cephalic outline, and a shorter, broadly-based pygidial spine. Both genera bear a strong resemblance to the contemporary genus Huntonia from the Devonian of Oklahoma. This one has been prepared in what has been termed the “flying” pose with only the pygidium still anchored in matrix. Note the unusual bicolor preservation. This is entirely natural, and is due to differential uptake of minrerals durting diagenesis.

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