 As oxygen levels lowered through time, arthropods became smaller.The history of scientific millipede classification began with Carl Linnaeus, who in his 10th edition of "Systema Naturae", 1758, named seven species of "Julus" as "Insecta Aptera" (wingless insects).In 1802, the French zoologist Pierre André Latreille proposed the name Chilognatha as the first group of what are now the Diplopoda, and in 1840 the German naturalist Johann Friedrich von Brandt produced the first detailed classification.