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词条 Osteolepidida
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{{See also|Osteolepiformes}}{{Taxobox
| name = Osteolepidida
| fossil_range = {{Fossil range|396|299}}Middle Devonian to Late Carboniferous
| image = Osteolepis BW.jpg
| image_width = 200px
| image_caption = Osteolepis.
| regnum = Animalia
| phylum = Chordata
| subphylum = Vertebrata
| classis = Sarcopterygii
| subclassis = Tetrapodomorpha
| superordo = Osteolepidida*
| subdivision_ranks = Clades
| subdivision =
  • †Canowindridae
  • †Thysanolepidae
  • †Tristichopteridae
  • †Megalichthyiformes
    • †Megalichthyidae
    • †Osteolepidae

}}Osteolepidida, also known as osteolepiformes,[1] are a group of prehistoric lobe-finned fishes which appeared first time during the Devonian period. The order contains five families: Canowindridae, Megalichthyidae, Osteolepidae, Thysanolepidae and Tristichopteridae. The superorder is generally considered to be paraphyletic because the characters that define it are mainly attributes of stem tetrapodomorphs.[1]

Below is a cladogram showing the paraphyly of Osteolepiformes compiled and modified from Ahlberg and Johanson (1998).[1] See also Swartz 2012.[2] The Osteolepiformes are marked by the green bracket.

{{Barlabel|size=23|at=8.5|label=Osteolepidida|colour=green|style=font-size:90%
|cladogram={{clade| style=line-height:75%
|label1=Tetrapodomorpha
|1={{clade
|1=Kenichthys
|2={{clade
|label1=Rhizodontida
|1={{cladex
|1=Barameda
|2=Gooloogongia}}
|2={{cladex
|1={{cladex
|1=Gogonasus | barbegin1=green
|2=Osteolepis | bar2=green
|2={{cladex
|1={{cladex
|1={{cladex
|1=Megalichthys |bar1=green
|2=Cladarosymblema |bar2=green
|2=Ectosteorhachis |bar2=green
|2={{cladex
|1=Medoevia |bar1=green
|2={{cladex
|1={{cladex
|1={{cladex
|1=Koharolepis |bar1=green
|2=Canowindra |bar2=green
|2=Beelarongia |bar2=green
|2={{cladex
|1=Gyroptychius |bar1=green
|2={{cladex
|label1=Tristichopteridae
|1={{cladex
|1={{cladex
|1={{cladex
|1={{cladex
|1={{cladex
|1=Eusthenodon |bar1=green
|2=Mandageria |bar2=green
|2=Cabonnichthys |bar2=green
|2=Platycephalichthys |bar2=green
|2=Jarvikina |bar2=green
|2=Eusthenopteron |bar2=green
|3=Tristichopterus |barend3=green
|2={{clade
|1=Panderichthys
|label2=Tetrapoda
|2={{clade
|1=Acanthostega
|2=Ichthyostega

}} }} }} }} }} }} }} }} }} }} }}


}}

References

1. ^{{cite journal |last=Ahlberg |first=P. E. |author2=Johanson, Z. |year=1998 |title=Osteolepiforms and the ancestry of tetrapods |journal=Nature |volume=395 |pages=792–794 |doi=10.1038/27421 |issue=6704 |url=http://www.biology.ualberta.ca/courses.hp/biol606/papers/Ahlberg+1998.pdf |bibcode=1998Natur.395..792A}}
2. ^{{cite journal | last = Swartz | first = B. | year = 2012 | title = A marine stem-tetrapod from the Devonian of Western North America | journal = PLoS ONE | pmid = 22448265 | volume = 7 | issue = 3 | pmc = 3308997 | pages = e33683 | doi = 10.1371/journal.pone.0033683 | url = http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0033683;jsessionid=E4E007B3FAC50B3B0C7C2B8B0CBE3F83 | format = | accessdate = | bibcode = 2012PLoSO...733683S }}

External links

  • Tree of Life
{{Portal|Paleontology}}{{osteolepiforms}}{{Taxonbar|from=Q15712863}}{{paleo-lobefinned-fish-stub}}

4 : Osteolepiformes|Fish superorders|Prehistoric fish taxonomy|Paraphyletic groups

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