extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of actinolepidH. G. Johnson, D. K. Elliott, and J. H. Wittke. 2000. A new actinolepid arthrodire (Class Placodermi) from the Lower Devonian Sevy Dolomite, east-central Nevada. Zoological Journal of the Linnean Society 129(2):241-266 . Wagner/P. Wagner/P. Wagner/ref> placoderm from the
Early Devonian
The Early Devonian is the first of three Epoch (geology), epochs comprising the Devonian period, corresponding to the Lower Devonian Series (stratigraphy), series. It lasted from and began with the Lochkovian Stage , which was followed by the P ...
. Four species are known: ''A. magna'' from
Estonia
Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, a ...
,R. Denison. 1978. Placodermi. In H.-P. Schultze (ed.), Handbook of Palaeoichthyology 2:1-128 . Dahdul/B. Frable /G. Lloyd/ref> ''A. spinosa'' from
Latvia
Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
( Sevy Dolomite), the type species ''A. tuberculata'' from
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...
Belarus
Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by R ...
Estonian Museum of Natural History Specimen No 203503 photo (g204 g204-1 jpg).jpg, Fragmentary dorsal armour of ''A. magna'' (specimen EMNH 203503); housed at the
Estonian Museum of Natural History
The Estonian Museum of Natural History (abbreviated EMNH; Estonian language, Estonian: ''Eesti Loodusmuuseum'') is the Estonian national museum for natural history. It is situated in Vanalinn, Tallinn's Old Town.
The museum focuses on natural h ...