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Contact: Eleanor Gaskarth
University of Exeter

Fossilized Sponge Spicules from the Middle Cambrian Mount Cap Formation, NW Canada

Caption: Sponges were the first animals to evolve and may have helped drive oceanic oxygenation in the Neoproterozoic through their active pumping and filter-feeding activities.

Credit: Nicholas J. Butterfield

Usage Restrictions: Credit Nicholas J. Butterfield

Related news release: First animals oxygenated the ocean, study suggests

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