3.7" Stalk-Eyed Asaphus Kowalewskii Trilobite - Very Large

 
 
 
 
This is a 3.7" long, stalk-eyed trilobite Asaphus kowalewskii. 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 to survey it's surroundings while remaining buried in the mud.

This example is extremely large for the species and laid out perfectly prone. There is about 7-8% shell restoration, mostly in the center of the tail and along repaired cracks.

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 described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left a excellent fossil record.
DETAILS
SPECIES
Asaphus kowalewskii
LOCATION
Vilpovitsy quarry, St. Petersburg region, Russia
FORMATION
Asery level
SIZE
3.7" long (including stalk eyes)
SUB CATEGORY
ITEM
#127846
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