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Fossil ghost shrimp description curves since 1820s. One interval represents 5 years (main figure) and 10 years (inset). Blue curve = number of described species; red curve = number of species described as Callianassa; green curve = number of genera. The three main peaks result from the works of A. Milne-Edwards, M.J. Rathbun and scholars of the 21st century.
