An artist's rendering of the ancient arthropod Erratus sperare
Anatomical Firsts in Early Arthropods
A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.
Anatomical Firsts in Early Arthropods
Anatomical Firsts in Early Arthropods

A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.

A team of scientists have discovered an ancient arthropod that may show the origins of branched limbs and the first gill-like breathing structures in the clade.

ABOVE: Fu et al., Phil Trans R Soc B, 2022
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Cambrian period
Image of the Day: Fossil Guts
The Scientist Staff | Sep 25, 2017
Scientists unearthed an intact, fossilized digestive organ of a 500-million-year-old trilobite—a prehistoric relative of the horseshoe crab.