Tag Archive for: trilobites

smithsonianmag.com

The world’s worst mass extinction has been a great whodunit for decades. Some 252 million years ago, 75 percent of land species and 90 percent of those in the oceans disappeared. But what caused trilobites, Eurypterid “sea scorpions” and all those other species to go extinct?

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Trilobites are always a fun find when you’re exploring the outdoors, but how much do you know about Trilobites as living organisms? Maybe you’re just interested in finding your own Trilobite fossils. Read more about the little critters in our “Glad You Asked” article HERE!

 

Trilobite, House Range, Millard County, Utah
Photographer: Michael Vanden Berg

Cambrian-age shales from western Utah’s House Range contain millions of fossilized trilobites, such as this specimen of Elrathia kingi.

pi-93FOSSIL ENVIRONMENTS IN UTAH
Carole McCalla

Colorful images show Utah’s different environments over the past 500 million years. Selected fossils from each environment are identified and range from ocean trilobites, to fresh-water fish, to plants, to dinosaurs, and Ice Age mammals.

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PI-93……….free

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