Rare, 1.4" Dysplanus Babinoensis Trilobite - Russia
This nice, 1.4" long Dysplanus babinoensis (Melnikov, 1995) trilobite from the St. Petersburg region of Russia. This specimen is beautifully preserved and laid out with an inverted back arch. This shell has roughly 5% restoration along a repaired crack through its tail.
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.