DENVER MUSEUM OF NATURE & SCIENCE ONLINE MAGAZINE

Welcome to the Spring 2025 issue of Catalyst!

On the cover: A selection of Early Jurassic ammonites — Pleurolytoceras hirnicusHarpoceras radians and Harpoceras algovianus — collected from Germany.

Catalogue numbers: EPI.33553, EPI.33491, EPI.33488.

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