Myriapoda (Centipedes, Millipedes, Pauropoda & Symphyla)
The oldest known air-breathing terrestrial animal is a millipede (Pneumodesmus newmani) which lived in what is now Scotland more than 400mya, during either the Early Devonian or Late Silurian. Only a single specimen is known.
Class: Chilopoda (Centipedes)
Order: Geophilomorpha (Soil Centipedes)
Family: Mecistocephalidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Mecistocephalus cyclops | Brölemann, 1896 | - | 1892 | La Digue, Seychelles | Extinct | Access |
| Mecistocephalus sechellarum | Demange, 1981 | - | 1972 | Silhouette, Seychelles | Extinct | Access |
Order: Lithobiomorpha (Stone Centipedes)
Family: Henicopidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Lamyctes leleupi | Matic & Darabantu, 1977 | Leleup’s centipede | - | St. Helena | Rediscovered | Access |
Class: Diplopoda (Millipedes)
Order: Callipodida
Family: Schizopetalidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Euxinopetalum dobatorum | Hoffman, 1973 | - | (rediscovered) | Heracles Cave, Turkey | Rediscovered | Access |
Order: Glomerida
Family: Glomeridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Glomeris aurita | Koch, 1847 | - | (rediscovered) | Italy | Rediscovered | Access |
Order: Platydesmida
Family: Andrognathidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Mitocybe auriportae | Cook & Loomis, 1928 | (rediscovered) | Marin County & Santa Cruz County, California, USA | Rediscovered | Access |
Order: Polydesmida
Family: Paradoxosomatidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Diglossosternoides curiosus | Golovatch & Korsós, 1992 | - | 1984 | Mahé, Seychelles | Extinct | Access |
| Orthomorpha crinita | Attems, 1900 | - | 1894 | Mahé, Seychelles | Extinct | Access |
Family: Xystodesmidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Xystocheir bistipita | Shelley, 1996 | - | - | California, USA | Rediscovered | Access |
Order: Polyzoniida
Family: Siphonotidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Rhinotus albifrons | Mauriès, 1980 | - | 1972 | Praslin, Seychelles | Extinct | Access |
Order: Scolopendromorpha
Family: Mimopidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Mimops orientalis | Kraepelin, 1903 | - | (rediscovered) | China | Rediscovered | Access |
Order: Siphonophorida
Family: Siphonorhinidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Illacme plenipes | Cook & Loomis, 1928 | - | - | California, USA | Rediscovered | Access |
Order: Spirobolida
Family: Pachybolidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
|
Eucarlia alluaudi
|
Brolemann, 1896 | 1892 | Marianne Island, Seychelles | Extinct | Access | |
| Eucarlia urophora | (Pocock, 1893) | (rediscovered) | Mahé & Silhouette, Seychelles | Rediscovered | Access | |
| Pelmatojulus tectus | Cook, 1897 | - | (rediscovered) | Cameroon | Rediscovered | Access |
Family: Spirobolellidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Hylekobolus latifrons | Wesener, 2009 | Wide-headed wood-millipede | 1926 | Madagascar (southeastern) | Extinct | Access |
| Spirobolellus praslinus | Saussure & Zehntner, 1902 | - | 1902 | Praslin, Seychelles | Extinct | Access |
| Spirobolellus simplex | Golovatch & Korsos, 1984 | - | 1951 | Praslin, Seychelles | Extinct | Access |
Family: Trigoniulidae
—No subordinate taxa