''Ctenothrissa'' is a prehistoric
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
ray-finned fish
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species.
The ray-finned fishes are so called because their fins are webs of skin supported by bony or hor ...
in the supposed
order "
Ctenothrissiformes
Ctenothrissiformes is an extinct order of prehistoric ray-finned fish.
Timeline of genera
ImageSize = width:1000px height:auto barincrement:15px
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Period = from:-145.5 till:-65.5
TimeA ...
".
Taxonomy
These
Teleostei
Teleostei (; Ancient Greek, Greek ''teleios'' "complete" + ''osteon'' "bone"), members of which are known as teleosts ), is, by far, the largest class (biology), infraclass in the class Actinopterygii, the ray-finned fishes, containing 96% of a ...
are only known from
fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
s. While they are sometimes included in the
superorder
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...
Acanthopterygii
Acanthopterygii (meaning "spiny finned one") is a superorder of bony fishes in the class Actinopterygii. Members of this superorder are sometimes called ray-finned fishes for the characteristic sharp, bony rays in their fins; however this name i ...
or
Protacanthopterygii
Protacanthopterygii is a ray-finned fish taxon ranked as a superorder of the infraclass Teleostei. They inhabit both marine and freshwater habitats. They appear to have evolved in the Cretaceous or perhaps late Jurassic, originating probably roug ...
, this is neither well-supported, nor is the
monophyly
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic grou ...
of the "Ctenothrissiformes" robustly established. Indeed, it is quite likely that the supposed order is a
paraphyletic
In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...
assemblage of ancient moderately advanced Teleostei.
[Taylor (2009)]
Gallery
File: Ctenothrissa sp Cenomaniano Hakel.JPG , ''Ctenothrissa'' species
File: Ctenothrissa vexillifer.JPG , ''Ctenothrissa vexillifer (Pictet, 1850)''
File: FMIB 51745 Ctenothrissa vexillifera Pictet, restored Mt Lebanon cretaceous.jpeg, ''Ctenothrissa vexillifer'', restored
See also
*
Prehistoric fish
The evolution of fish began about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the skull and the vertebral column, leading to the first craniates and vertebrates. The first fish ...
*
List of prehistoric bony fish
A ''list'' is any set of items in a row. List or lists may also refer to:
People
* List (surname)
Organizations
* List College
Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ...
Bibliography
* (2009): ''Catalogue of Organisms'' &ndash
Living Larvae and Fossil Fish Version of 2009-FEB-05. Retrieved 2009-SEP-28.
* Carroll, R. L. 1988. Vertebrate Paleontology and Evolution. New York: W. H. Freeman & Co.
* M. Gayet, A. Belouze & P. Abi Saad, 2003. Liban Mémoire du Temps. Les Poissons fossiles. Éditions Desiris.
* Patterson, C. 1964. "A review of Mesozoic acanthpterygian fishes, with special reference to those of the English chalk." Phil. Trans. Roy Soc. London 247(B):213-482.
* Woodward, A. S., 1899: Additional notes on some Type specimens of Cretaceous Fishes from Mount Lebanon in the Edinburgh Museum of Science and Art. Annals of Natural History, IV 317-321
*Woodward, A. S., 1899: Note on some Cretaceous clupeoid fishes with pectinated scales (Ctenothrissa and Pseudoberyx). Annals and Magazine of Natural History, series 7 3:489-492
. Carrano/M. Carrano* Woodward, A.S., 1891–1901. Catalogue of Fossil Fishes in the British Museum, Parts 1–4. London: British Museum.
References
Prehistoric ray-finned fish genera
Cretaceous bony fish
Late Cretaceous fish of Asia
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