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Which other fossil animals did Louis Agassiz study besides fishes?
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Louis Agassiz
An undated engraving of Louis Agassiz.
In addition to his extensive work on fossil fishes, Louis Agassiz conducted significant research on other extinct animals. Specifically, he published two volumes on fossil echinoderms of Switzerland between 1838 and 1842, as well as Études critiques sur les mollusques fossiles (Critical Studies on Fossil Mollusks) in 1841–42.1