Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
class within thesuperclass Osteichthyes — thelungfish ,coelacanths , and allTetrapoda (animals with four legs). - proper noun historical A taxonomic class including only the lungfish, coelacanths, and extinct relatives.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Tetrapods are part of a larger groups called Sarcopterygii, which also includes several groups of lobe-finned fish, such as lungfish and the coelacanth.
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The Sarcopterygii are just one group of vertebrates, or animals with a backbone.
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Coelacanths and Eusthenopteron belong to two separate groups of Sarcopterygii: Actinistia and Osteolepiformes, respectively.
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By integrating phylogenetics of novel vtg transcripts from old and modern teleosts with syntenic analyses of all available genomic variants of non-metatherian vertebrates we identify the gene orthologies between the Sarcopterygii (tetrapod branch) and Actinopterygii (fish branch).
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The vertebrate vtg gene cluster existed prior to the separation of Sarcopterygii from Actinopterygii >
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