UNM Newsroom / News / Geologists refine the timing of the Cambrian explosion and trilobite evolution in Grand Canyon

Panorama of Palisades

Panorama of Palisades

measured section from the left extending up to red cliffs.

Credit: Laura J. Crossey

Karl Karlstrom measuring

Karl Karlstrom measuring

paleocurrents in sandstone bed of the Tapeats Sandstone.

Graduate students,

Graduate students,

BSU's Michael Mohr and UNM's Jordan Anderson, working bed by bed to find and characterize key fossil layers.

Olenellid trilobites in

Olenellid trilobites in

ripple marked sandstone feeding facing upstream.

Scientists including

Scientists including

James Hagadorn (left), Steve Rowland (center) and Karl Karlstrom (right) confirming field notes after measuring a section of the Tonto Group. The banded rod is used to accurately describe and quantify sedimentary strata in a vertical framework centimeter by centimeter.

Geologists refine the timing of the Cambrian explosion and trilobite evolution in Grand Canyon

UNM scientists featured in latest issue of Geology

By Steve Carr May 01, 2020

Categories: Front Page College of Arts & Sciences Earth & Planetary Sciences Research

Tags: research Grand Canyon

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