1.5" Stalk-Eyed Asaphus Kowalewskii Trilobite - Russia

This is a 1.5" long, stalk-eyed trilobite Asaphus kowalewskii that is prepared to look like it is crawling over the rock. It is Middle Ordovician in age and was collected at the Vilpovitsy quarry in the St. Petersburg region of Russia. The stalk eyes likely allowed it to survey its surroundings while remaining buried in the mud.

Like nearly all of these asaphid trilobites from these quarries, there is some shell restoration. The shell tends to fracture, particularly on the tails and stalks during the splitting process. This specimen has about 8% shell restoration.

Photo of the Vilpovitsy quarry near St. Petersburg Russia where this trilobite was found.
Photo of the Vilpovitsy quarry near St. Petersburg Russia where this trilobite was found.

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 with over 25k currently described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left an excellent fossil record.
DETAILS
SPECIES
Asaphus kowalewskii
LOCATION
Vilpovitsy quarry, St. Petersburg region, Russia
FORMATION
Asery level
SIZE
1.5" long (including eye stalks)
SUB CATEGORY
ITEM
#191306
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