When life first appeared in the world's oceans, it did so in a minuscule form we would hardly recognize, as tiny photosynthetic bacteria struggling for existence. Billions of years later, during the Cambrian Period, life blossomed in diversity with fish, trilobites, and crustaceans.

Now, you can collect a timeline of our planet's aquatic life with the Mini Museum Ancient Oceans specimen. This item is a collection of tiny sea creature fossils showcasing the diversity of our world's oceans. Each collection includes four fossils: Brachiopod, Horn Coral, Crinoid, and Bryozoan. Together, they comprise over 250 million years from the Ordovician to the Jurassic. A certificate of authenticity and photo identification guide is included with each fossil set!⁠