''Bouleia'' is a genus of

trilobite Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most succ ...

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 thoraci ...

(family

Calmoniidae Calmoniidae is a family of trilobites from 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 rel ...

) which existed during the lower

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

in what is now

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

. It was described by Kozlowski in 1923, and the

type species In International_Code_of_Zoological_Nomenclature, 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 spe ...

is ''B. dagincourti'', which was originally described under the genus ''

Phacops ''Phacops'' is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Late Ordovician until the very end of the Devonian, with a broader time range ...

'' by Ulrich in 1892. It also contains the species ''B. sphaericeps'', originally described by Kozlowski, also in 1923, as ''Dereimsia sphaericeps''. The type locality was the Icla Formation in Padilla.

Taxonomy

''Bouleia'' belongs to a group of primarily South-American species that developed from the genus ''

Metacryphaeus ''Metacryphaeus'' is an extinct genus of trilobites from the family Calmoniidae. ''Metacryphaeus'' fossils have been found in Bolivia, Brazil, South Africa and Uruguay. The genus was named in 1907.F. R. C. Reed. 1907. A new species of ''Lichas ...

''. It is most related to '' Parabouleia'', and these two genera together are the sistergroup of a clade containing '' Vogesina'', '' Palpebrops'' and '' Malvinella''.

References

External links

''Bouleia''
at the

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

Calmoniidae Phacopida genera Devonian trilobites of South America Fossil taxa described in 1923 Devonian animals of North America {{phacopida-stub