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From Large to Small to Large: Phylogenetic Systematics of Rotulid “Sand Dollars” and their Tiny Relatives
(Kalamazoo College, 2006-04-28)
The Clypeasteroida (sand dollars and allies) comprises three clades: Clypeasterina, Laganina, and Scutellina (true sand dollars). The diverse Laganina contains taxa that vary greatly in size, from the large, sand ...