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Tetrapodomorpha
Four Legs
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Tetrapodomorpha is a clade of vertebrates, consisting of tetrapods (four-limbed vertebrates) and their closest sarcopterygian relatives. Primitive forms, like Tiktaalik, have been referred to as "fishapods" by their discoverers, since they were half-fish half-tetrapods, at least in appearance. Tetrapodomorpha contains the true tetrapods and several groups of related lobe-finned fishes, collectively known as the osteolepiforms.

Among the characters defining tetrapodomorphs are modifications to the fins, notably a humerus with convex head articulating with the glenoid fossa (the socket of the shoulder joint).

Tetrapodomorph fossils are known from the early Devonian onwards, and include Osteolepis and Panderichthys.

Tetrapodomorpha :
Tetrapoda - Four Feet

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Tetrapodomorpha
Four Legs
Sarcopterygii
Gnathostomata
Jaws
Vertebrata
Vertibrates
Chordata
Chords
Deuterostomia
Mouth Second
Bilateria
Two-Way Symmetry
Eumetazoa
True Higher Animals
Animalia
Animals
Eukaryota
Eukaryota
Cells with a Nucleus

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