''Digonus'' is a genus of

trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

s in the order

Phacopida Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related suborders. Characteristics Phacopida had 8 to 19 thorac ...

, that existed during the lower

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...

in what is now

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

. It was described by Gurich in 1909, and the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

is ''Digonus gigas'', which was originally described under the genus ''

Homalonotus ''Homalonotus'' is an extinct genus of trilobites in the order Phacopida. It contains several species, including ''H. armatus'' and ''H. roemeri''. It is closely related to other trilobites such as Arduennella and Dipleura.. Distribution Fos ...

'' by Roemer in 1843. It also contains the species ''Digonus accraensis'' and ''Digonus noticus'' (both of which were formerly placed in ''

Burmeisteria ''Burmeisteria'' is a genus of trilobites in the order Phacopida (family Homalonotidae) that existed during the lower Devonian in what is now South Africa. It was described by Salter in 1865, and the type species is ''Burmeisteria herschelii'', w ...

''), ''Digonus vialai'', and ''Digonus zemmourensis''. The type locality was in the

Harz The Harz () is a highland area in northern Germany. It has the highest elevations for that region, and its rugged terrain extends across parts of Lower Saxony, Saxony-Anhalt, and Thuringia. The name ''Harz'' derives from the Middle High German ...

mountains.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

References

External links

''Digonus''
at the

Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...

Homalonotidae Phacopida genera Fossil taxa described in 1909 Devonian trilobites of Europe Fossils of Germany {{phacopida-stub