Platyurus and Pseudoasaphus Russian Trilobites

Name: Platyurus with Pseudoasaphus with cystoid

Class Trilobita; Order Asaphida; Superfamily Asaphoidea; Family Asaphidae

Geological Time: Middle Ordovician

Size: Platyurus - 85 mm; Pseudoasaphus 125 mm

Fossil Site: Asery level, St. Petersburg region, Wolchow river, Russia

A magnificent association fossil with two rarer Asaphid trilobites, Platyurus and Pseudoasaphus, both stunningly well-preserved, and both near the size limit for their species. Both reside stretched and inflated on a massive piece of Ordovician seafloor measuring more than 14 inches across.

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