Brachythoraci
Encyclopedia
The Brachythoraci were a suborder of arthrodire placoderms, armored fish most diverse during the Devonian
. They used to contain only the Coccosteina
, but the more basal family
, Heterosteidae is now placed there too.
Devonian
The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 416.0 ± 2.8 Mya , to the beginning of the Carboniferous Period, about 359.2 ± 2.5 Mya...
. They used to contain only the Coccosteina
Coccosteina
The Coccosteina were an infraorder of placoderms, armored fish most diverse during the Devonian.-Systematics:* Basal genus Maideria* Superfamily Buchanosteoidea** Family Buchanosteidae* Superfamily Gemuendenaspoidea** Family Gemuendenaspidae...
, but the more basal family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
, Heterosteidae is now placed there too.