1.9" Isoteloides Flexus Trilobite - Fillmore Formation, Utah

Here is a new offering from a lease we just recently acquired in Utah. While Cambrian trilobites are well known from Utah, several formations also contain a very diverse fauna of Ordovician trilobites, they are just rarely collected.

This is a nice, 1.9" long asaphid trilobite (Isoteloides flexus) from the Lower Ordovician, Fillmore Formation in Utah. The vast majority of Isoteloides we find are under an inch long, so this one is pretty good sized. There is some compression but the shell in generally well preserved and both cheeks are in place.

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.
FOR SALE
$695
DETAILS
SPECIES
Isoteloides flexus
LOCATION
FossilEra Lease, Southern House Range, Utah
FORMATION
Fillmore Formation - Presbynelius Zone
SIZE
1.9" long on 4.6 x 4" rock
SUB CATEGORY
ITEM
#226268
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