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Tubular incomplete specimens of Eopriapulites sphinx from the early Cambrian Kuanchuanpu Formation, showing their ventral nerve cord. Credit: Science Advances (2025). DOI: 10.1126/sciadv.adr0896 An international team of scientists has uncovered a fascinating piece of the evolutionary puzzle: how the ventral nerve cord, a key component of the central nervous system, evolved in ecdysozoan animals, a
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An X-ray reconstruction of a 32-million-year-old fossil kelp holdfast colored to show the base (orange), holdfast (yellow) and the bivalve shell to which it attached (blue). Credit: Dula Parkinson/Advanced Light Source, Lawrence Berkeley National Laboratory The unique underwater kelp forests that line the Pacific Coast support a varied ecosystem that was thought to have evolved
An illustration of Vintana, an ancient groundhog-like mammal that lived in Madagascar during the time of the dinosaurs. Credit: Gary Staab Approximately 200 million years ago, Antarctica was attached to South America, Africa, India, and Australia in a single “supercontinent” called Gondwana. Paleontologists have long wondered about the unique mammals that lived only on this…