Chilognatha is a subclass of the class Diplopoda, which includes the vast majority of extant millipede, about 12,000 species.
Chordeumatida is a large order of millipedes containing some 1200 species with a nearly worldwide distribution. They possess around 30 body segments and reach about 25 mm (0.98 in) in length.
Siphoniulus is a poorly known genus of millipede containing only two living species: S. alba from Indonesia, and S. neotropicus from Mexico and Guatemala. An additional two fossil species are known from Cretaceous amber. Siphoniulus species are the only members of the family Siphoniulidae and order Siphoniulida, making Siphoniulida the smallest millipede order. Few specimens are known, and their classification is contentious, although most recent studies place them as basal members of the Helminthomorpha.
Harold Frederick Loomis was an American botanist and myriapodologist known for his contributions to agronomy, plant pathology, and millipede taxonomy. He worked for the U.S. Department of Agriculture for over four decades, studying diseases of crop plants, and was a colleague of Orator F. Cook. He also made major contributions to the natural history of Central America and the West Indies, naming over 500 species of millipedes in total. He co-described with Cook the leggiest animal on earth: Illacme plenipes, with over 700 legs.
Siphonorhinidae is a family of millipede in the order Siphonophorida. There are at least 4 genera and about 12 described species in Siphonorhinidae.
Siphonophoridae is a family of millipede in the order Siphonophorida. There are about 12 genera and more than 110 described species in Siphonophoridae.
Andrognathidae is a family of millipede in the order Platydesmida. There are about 17 genera and more than 30 described species in Andrognathidae.
Platydesmidae is a family of millipede in the order Platydesmida. There are at least 2 genera and more than 30 described species in Platydesmidae.
Casimir Albrecht Willem Jeekel (1922–2010) was a Dutch myriapodologist and entomologist known for his major contributions to the taxonomy of millipedes. His 1971 monograph Nomenclator Generum et Familiarum Diplopodorum is credited as launching the "modern era" of millipede taxonomy, and has been considered the "most important single work ever published on the Diplopoda". He served as director of the Zoological Museum Amsterdam, and authored over 150 works on the taxonomy of millipedes and other myriapods.
Abacionidae is a family of crested millipedes in the order Callipodida. There are at least three genera and about 13 described species in Abacionidae.
Florea is a genus of crested millipedes in the family Tynommatidae. There is one described species in Florea, F. sinuata.
Brachycybe lecontii is a species of millipede in the family Andrognathidae. It is found in North America.
Cylindroiulus caeruleocinctus is a species of millipede in the family Julidae.
Pachydesmini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are at least 3 genera and more than 20 described species in Pachydesmini.
Chonaphini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are about 6 genera and 19 described species in Chonaphini.
Xystocheirini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are about 5 genera and more than 40 described species in Xystocheirini.
Tynommatidae is a family of millipedes in the order Callipodida. There are about 12 genera and more than 30 described species in Tynommatidae, found mainly in western North America.
Rhachodesmidae is a family of flat-backed millipedes in the order Polydesmida. There are more than 20 genera and at least 80 described species in Rhachodesmidae.
Spirobolellidae is a family of millipedes in the order Spirobolida. There are about 11 genera and more than 100 described species in Spirobolellidae.
Metopidiotrichidae is a family of millipedes in the order Chordeumatida. There are about 9 genera and at least 70 described species in Metopidiotrichidae.
