Tarasiiformes is an
extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...
order of
prehistoric
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins million years ago and the beginning of recorded history with the invention of writing systems. The use o ...
ray-finned fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...
.
Taxonomy
* Order †Tarrasiiformes
sensu Lund & Poplin 2002 aplistiaref name="mikko">
** Family †Tarrasiidae
Traquair 1881 emend. Woodward 1891
*** Genus †''
Apholidotos''
Lund ex Frickinger 1991 nomen novum
**** Species †''
Apholidotos ossna''
Lund ex Frickinger 1991 nomen novum
*** Genus †''Paratarrasius''
Lund & Melton 1982
**** Species †''Paratarrasius hibbardi''
Lund & Melton 1982
*** Genus †''Tarrasius''
Traquair 1881
**** Species †''
Tarrasius problematicus
Tarasiiformes is an extinct order of prehistoric Actinopterygii, ray-finned fish.
Taxonomy
* Order †Tarrasiiformes sensu Lund & Poplin 2002 aplistia** Family †Tarrasiidae Traquair 1881 emend. Woodward 1891
*** Genus †''Apholidotos'' Lu ...
''
Traquair 1881
Timeline of genera
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from: -416 till: -411.2 color:earlydevonian text: Loch.
from: -411.2 till: -407 color:earlydevonian text: Prag.
from: -407 till: -397.5 color:earlydevonian text: Ems.
from: -397.5 till: -391.8 color:middledevonian text: Eif.
from: -391.8 till: -385.3 color:middledevonian text:Givetian
The Givetian is one of two faunal stages in the Middle Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Eifelian Stage and followed by the Frasnian Stage. It is named after the town of Givet in ...
from: -385.3 till: -374.5 color:latedevonian text:Frasnian
The Frasnian is one of two faunal stages in the Late Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Givetian Stage and followed by the Famennian Stage.
Major reef-building was under way during ...
from: -374.5 till: -359.2 color:latedevonian text:Famennian
The Famennian is the later of two faunal stages in the Late Devonian epoch. The most recent estimate for its duration is that it lasted from around 371.1 to 359.3 million years ago. An earlier 2012 estimate, still used by the International Commis ...
from: -359.2 till: -345.3 color:mississippian text:Tournaisian
The Tournaisian is in the ICS geologic timescale the lowest stage or oldest age of the Mississippian, the oldest subsystem of the Carboniferous. The Tournaisian age lasted from Ma to Ma. It is preceded by the Famennian (the uppermost st ...
from: -345.3 till: -328.3 color:mississippian text:Viséan
The Visean, Viséan or Visian is an age in the ICS geologic timescale or a stage in the stratigraphic column. It is the second stage of the Mississippian, the lower subsystem of the Carboniferous. The Visean lasted from to Ma. It follows ...
from: -328.3 till: -318.1 color:mississippian text: Serpukhov.
from: -318.1 till: -311.7 color:pennsylvanian text: Bashkir.
from: -311.7 till: -306.5 color:pennsylvanian text: Mosc.
from: -306.5 till: -303.9 color:pennsylvanian text: K.
from: -303.9 till: -299 color:pennsylvanian text: Gzh.
bar:eratop
from: -416 till: -359.2 color:devonian text:Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...
from: -359.2 till: -299 color:carboniferous text:Carboniferous
The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...
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color:mississippian bar:NAM2 from:-345.3 till:-328.3 text: Tarrasius
color:mississippian bar:NAM3 from:-328.3 till:-325 text: Paratarrasius
color:pennsylvanian bar:NAM4 from:-308.23 till:-306.5 text: Palaeophichthys
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from: -416 till: -411.2 color:earlydevonian text: Loch.
from: -411.2 till: -407 color:earlydevonian text: Prag.
from: -407 till: -397.5 color:earlydevonian text: Ems.
from: -397.5 till: -391.8 color:middledevonian text: Eif.
from: -391.8 till: -385.3 color:middledevonian text:Givetian
The Givetian is one of two faunal stages in the Middle Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Eifelian Stage and followed by the Frasnian Stage. It is named after the town of Givet in ...
from: -385.3 till: -374.5 color:latedevonian text:Frasnian
The Frasnian is one of two faunal stages in the Late Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Givetian Stage and followed by the Famennian Stage.
Major reef-building was under way during ...
from: -374.5 till: -359.2 color:latedevonian text:Famennian
The Famennian is the later of two faunal stages in the Late Devonian epoch. The most recent estimate for its duration is that it lasted from around 371.1 to 359.3 million years ago. An earlier 2012 estimate, still used by the International Commis ...
from: -359.2 till: -345.3 color:mississippian text:Tournaisian
The Tournaisian is in the ICS geologic timescale the lowest stage or oldest age of the Mississippian, the oldest subsystem of the Carboniferous. The Tournaisian age lasted from Ma to Ma. It is preceded by the Famennian (the uppermost st ...
from: -345.3 till: -328.3 color:mississippian text:Viséan
The Visean, Viséan or Visian is an age in the ICS geologic timescale or a stage in the stratigraphic column. It is the second stage of the Mississippian, the lower subsystem of the Carboniferous. The Visean lasted from to Ma. It follows ...
from: -328.3 till: -318.1 color:mississippian text: Serpukhov.
from: -318.1 till: -311.7 color:pennsylvanian text: Bashkir.
from: -311.7 till: -306.5 color:pennsylvanian text: Mosc.
from: -306.5 till: -303.9 color:pennsylvanian text: K.
from: -303.9 till: -299 color:pennsylvanian text: Gzh.
bar:era
from: -416 till: -359.2 color:devonian text:Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...
from: -359.2 till: -299 color:carboniferous text:Carboniferous
The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...
''Tarrasius'' is an extinct genus of Tarasiiformes. ''Tarrasius problematicus'' (of
Mississippian origin, ~ 350
Ma) featured a fully regionalized
tetrapod
A tetrapod (; from Ancient Greek :wiktionary:τετρα-#Ancient Greek, τετρα- ''(tetra-)'' 'four' and :wiktionary:πούς#Ancient Greek, πούς ''(poús)'' 'foot') is any four-Limb (anatomy), limbed vertebrate animal of the clade Tetr ...
-like spine divided into 5 distinct segments.
It is not considered a
transitional fossil
A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross ...
though, but an extreme example of
convergent evolution
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last comm ...
.
See also
*
Prehistoric fish
__NOTOC__
Prehistoric fish are early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Quaternary. The study of prehistoric fish is ...
*
List of prehistoric bony fish
This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ...
*
Convergent evolution
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last comm ...
Bibliography
*
References
External links
Bony fish in the online Sepkoski Database
{{Taxonbar, from=Q7686676
Carboniferous bony fish
Prehistoric ray-finned fish orders
Monotypic vertebrate orders