''Atlantidosteus'' is an extinct genus of
homostiid arthrodire
Arthrodira (Greek for "jointed neck") is an Order (biology), order of extinct armored, jawed fishes of the class Placodermi that flourished in the Devonian period before their sudden extinction, surviving for about 50 million years and penetratin ...
from the
Early
Early may refer to:
Places in the United States
* Early, Iowa, a city
* Early, Texas, a city
* Early Branch, a stream in Missouri
* Early County, Georgia
* Fort Early, Georgia, an early 19th century fort
Music
* Early B, stage name of Jamaican d ...
to
Middle Devonian
In the geological timescale, the Middle Devonian epoch (from 393.3 ± 1.2 million years ago to 382.7 ± 1.6 million years ago) occurred during the Devonian period, after the end of the Emsian age.
The Middle Devonian epoch is subdivided into two ...
of
Morocco
Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...
and
Queensland
Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Austr ...
.
It contains two known species, ''A. hollardi'' and ''A. pacifica''.
Description
''Atlantidosteus pacifica'' is known from a right suborbital plate, found in the Broken River Group of
Queensland, Australia.
Phylogeny
''Atlantidosteus'' is part of the
clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
Migmatocephala
Migmatocephala is a clade of placoderm fish within the suborder Brachythoraci. Migmatocephala includes the homostiids Taemasosteus?, '' Tityosteus'', ''Antineosteus'', '' Atlantidosteus'', and '' Homosteus''.
Phylogeny
The cladogram
A ...
, closer related to
Homostius, than
Antineosteus
References
{{Arthrodira, state=E.
{{Taxonbar, from=Q21416371
Homostiidae
Arthrodire genera
Placoderms of Africa
Placoderms of Europe ...
.
{{Clade, style=
{{Clade
, 1=''
Tityosteus
''Tityosteus'' is an extinct genus of homostiid arthrodire from the Early Emsian of the Early Devonian, with fossils known from Germany, the Ibero-Armorican Trough, and southern Siberia. It attained a length of 2.5 meters.
Description
''Ti ...
''
, 0=''
Taemasosteus'', 4={{Clade
, 1=''
Antineosteus
References
{{Arthrodira, state=E.
{{Taxonbar, from=Q21416371
Homostiidae
Arthrodire genera
Placoderms of Africa
Placoderms of Europe ...
''
, 2={{Clade
, 1=''Atlantidosteus''
, 2=''
Homostius''
The cladogram shown here is based on Young, 2003
References
{{Arthrodira, E
{{Taxonbar, from=Q116235769
Fossil taxa described in 1984
Homostiidae
Arthrodire genera
Placoderms of Australia
Placoderms of Africa
{{Placoderm-stub