Sarcopterygii
Coelacanthimorpha - Coelacanths
Dipnoi - Lungfishes
Tetrapoda
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Sarcopterygii is traditionally the
class of lobe-finned
fishes, consisting of
lungfish and
coelacanths. Most taxonomists who subscribe to the
cladistic approach include within this group the subclass
Tetrapoda, which in turns consists of all species of four-limbed
vertebrates:
This level of taxonomy is in flux however; the membership of Sarcopterygii is likely to change, and it may even be discontinued as a classification.
