Dero, Freshwater Annelid

For a class of 30 students. An oligochaete with the posterior end developed into a respiratory organ with ciliated gills. Freshwater annelid. Size, about 1 cm.v

Description

For a class of 30 students. An oligochaete with the posterior end developed into a respiratory organ with ciliated gills. Freshwater annelid. Size, about 1 cm.v

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