description Olenus Overview
Olenus is a genus of trilobites from the Upper Cambrian, with important fossil occurrences in Scandinavia and Wales. The genus gives its name to the Olenus Biozone, a biostratigraphic interval used to correlate Cambrian strata. Olenus is associated with marine environments that could develop low-oxygen conditions near the seafloor, and it belongs to the trilobite family Olenidae.
help Olenus FAQ
What period did Olenus live in?
Olenus is a trilobite genus from the Upper Cambrian, so it lived in the later part of the Cambrian Period. Its fossils are especially associated with marine rocks in Scandinavia and Wales.
What is the Olenus Biozone?
The Olenus Biozone is a biostratigraphic interval named after the genus Olenus. Geologists use the occurrence of Olenus and related fossils to correlate Cambrian rock layers between different areas.
Was Olenus a land animal or marine animal?
Olenus was marine, like other trilobites, and its remains occur in sedimentary rocks formed on ancient sea floors. A trilobite body was divided into a cephalon, a segmented thorax, and a pygidium.
Why do paleontologists care about Olenus beyond the fossil's appearance?
Olenus is valuable for biostratigraphy because it helps identify and compare Upper Cambrian strata. That makes the genus useful for reconstructing the timing and spread of ancient marine environments.
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