Trilobites are hard-shelled, segmented creatures that lived hundreds of millions of years ago in the Earth’s ancient seas. They are considered to be one of our planet’s earliest complex life-forms and are one of the key signature creatures of the Paleozoic Era. Trilobites went extinct before dinosaurs even existed.
Next to dinosaur fossils, trilobites command a dedicated and passionate following amongst both scientists and fossil collectors, alike. In a relatively short time-frame (scientifically speaking, of course), we have the emergence and subsequent extinction of these fascinating creatures. Still most baffling is the incredible diversity of sizes and features that made up the trilobite group. Many bizarre species co-existed with highly specialized body parts that defy the theories of evolution in their “sudden” emergence and diversity during the Early Cambrian Period in what is known as the ‘Cambrian Explosion’.
Trilobites were among the world’s first arthropods, a phylum of hard-shelled creatures with multiple body segments and jointed legs (although the legs, antennae and other finer structures of trilobites only very rarely are preserved). They constitute an extinct class of arthropods, Trilobita, that is comprised of over 15,000 known species.
Trilobite fossils are extremely popular with collectors. They are from an extinct group of arthropods that lived from the early Cambrian Period until near the end of the Permian Period. These hard-shelled prehistoric animals lived on the sea floors and reefs for millions of years. They developed into complex and beautiful animals, resulting in a variety of fossil-types.
The Antelope Springs area in Millard County Utah USA is one of the best places on earth to find trilobite fossils. There are both public and private quarries, so make sure you know where you are. The private quarries are well marked. These private areas charge a fee to dig in their quarries, but can almost guarantee that you will find trilobites. Or you can search for Trilobites for Free there are….
The Wheeler Amphitheater in the House Range, Millard County is one of the more well-known collecting areas. Most of the trilobites in this area come form the Middle Cambrian formation called the Wheeler Shale. The Wheeler Shale contains interbeds of shaley limestone, mudstone, and thin platy limestone. Another trilobite-bearing unit that directly overlies the Wheeler Shale in the central part of the House Range is the Marjum Formation. This formation consists of thin-bedded, fine-grained, silty limestone with interbeds of shale and mudstone.
For more information on the private quarries,
contact information is listed below:
P.O. Box 1113
350 East 300 South
Delta, Utah 84624
(435) 864-4294 FAX
A New Dig, Inc.
P.O. Box 122
Hinckley UT, 84635
Photo taken in Utah USA
Canon Rebel EOS 450D