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 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 related suborders.
Characteristics
Phacopida had 8 to 19 thorac ...
, suborder
Phacopina
The Phacopina comprise a suborder of the trilobite order Phacopida. Species belonging to the Phacopina lived from the Lower Ordovician ( Tremadocian) through the end of the Upper Devonian (Famennian).Moore, R.C. (ed.). Treatise on Invertebrate Pal ...
, superfamily Acastoidea.
It contains the following genera:
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Anchiopella
''Anchiopella'' is a genus of trilobites in the order Phacopida, which existed in Early Devonian times in what is now South Africa. It was described by Reed in 1907, and the type species is ''Anchiopella cristagalli'', which was originally descr ...
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Andinacaste
''Andinacaste'' is an extinct genus of trilobites. It contains two species, ''A. espejensis'', and ''A. legrandi''. Fossils have been found in the Catavi Formation of Bolivia.Australocaste''
*'' Australops''
*'' Awaria''
*''
Bainella
''Bainella'' is an extinct genus of Devonian trilobites from off the coast of Gondwana. Fossils were found in the Ponta Grossa Formation of Brazil, Belén, Icla and Gamoneda Formations of Bolivia and the Gydo, Gamka and Voorstehoek Format ...
Calmonia
''Calmonia'' is an extinct genus of trilobites. It contains one species: ''C. curvioculata''. Fossils of ''Calmonia'' have been found in the Emsian to Eifelian Ponta Grossa Formation and Chapada Group of Brazil, the Belén and Sica Sica Form ...
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Chiarumanipyge
''Chiarumanipyge'' is a genus of trilobites in the order Phacopida that existed during the lower Devonian in what is now Bolivia. It was described by Branisa and Vanek in 1973, and the type species is ''Chiarumanipyge profligata''. It was describ ...
Cryphaeoides
''Cryphaeoides'' is a genus of trilobites in the order Phacopida, that existed during the lower Devonian in what is now Bolivia. It was described by Delo in 1935, and the type species is ''Cryphaeoides rostratus'', which originally described unde ...
Deltacephalaspis
''Deltacephalaspis'' is an extinct genus of trilobites in the order Phacopida. It contains four species, ''D. comis'', ''D. magister'', ''D. retrospina'', and ''D. tumida''. Fossils of the genus have been found in the Belén, Icla and Gamoned ...
Kozlowskiaspis
''Kozlowskiaspis'' is a genus of trilobites in the order Phacopida (family Calmoniidae), that existed during the lower Devonian in what is now Bolivia. It was described by Branisa and Vanek in 1973, and the type species is ''Kozlowskiapsis super ...
Morocconites
''Morocconites malladoides'' is an average size (about ) trilobite, which lived during the Devonian period, in what is now southern Morocco. This species is assumed to be a close relative of '' Acastoides''. The most conspicuous feature is the ve ...