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Martin Rücklin

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Research group leader, Naturalis Biodiversity Center and Senior researcher, Instituut Biologie Leiden, Leiden University

Artist reconstruction of Alienacanthus malkowskii, a 365-million-year-old placoderm fish from Poland and Morocco. (Beat Scheffold & Christian Klug)

January 31, 2024

A 365‑million‑year‑old fish with an extreme underbite showcases vertebrate diversity

Melina Jobbins, University of Zurich; Christian Klug, University of Zurich, and Martin Rücklin, Leiden University

What paleontologists had believed to be spiny fins turned out to be elongated jaws. New examination of fossils that were 365 million years old revealed a fish with a remarkable lower jaw.

Danielle Dufault

May 12, 2021

Evolution of a smile: 400 million year old spiny fish overturns shark theory of tooth origins

Benedict King, Max Planck Institute for Evolutionary Anthropology; Martin Rücklin, Naturalis Biodiversity Center, and Philip C J Donoghue, University of Bristol

Scientists have long believed that sharks were the first vertebrates to evolve teeth. Our new study reveals a more complex history.

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Joined May 10, 2021