''Bouleia'' 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 (family Calmoniidae) which 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

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

. It was described by Kozlowski in 1923, 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 ''B. dagincourti'', which was originally described under the genus '' Phacops'' 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''. 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 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 ...

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