# Marine fossils in Colombia reveal possible evolutionary transition without mass extinction

- Source: Phys.org - latest science and technology news stories
- Published: 2026-10-30T14:00:05+00:00
- Category: Science
- Original: https://phys.org/news/2026-10-marine-fossils-colombia-reveal-evolutionary.html
- Canonical: https://groundlevelnews.com/story/marine-fossils-in-colombia-reveal-possible-evolutionary-transition-wit-9d6274/

A remarkably diverse fossil ecosystem in central Colombia that preserves an unusual overlap between survivors of older Jurassic groups and newer Cretaceous lineages has led researchers at McGill University and the Centro de Investigaciones Paleontológicas (CIP) to recognize a new pattern of large-scale evolutionary transition, one that does not include mass extinctions.

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