Tetrapoda

Tetrapoda (Yunani τετραποδη tetrapoda, Latin quadrupedal, "berkaki-empat") adalah hewan vertebrata yang berkaki empat, kaki atau seperti kaki. Amfibia, reptil, dinosaurus, unggas, dan mamalia merupakan bagian dari tetrapoda, dan bahkan ular yang tidak memiliki kaki juga merupakan tetrapoda menurut keturunan. Tetrapoda awal berasal dari Sarcopterygii atau ikan bersirip lobus.

Referensi

Pranala luar 

 Cladistic analysis of osteolepiform Sarcopterygians 
 Tree of Life: Terrestrial Vertebrates 
 a "Tetrapod"? What is a tetrapod? 
 UCMP Taxonomy page
 Tetrapod cladograms  — similar to genealogical family trees
 How did fish grow legs?
 New fossils fill gap between water and land animals 
 Human Ears Evolved from Ancient Fish Gills
 Scientific American: Getting a Leg Up on Land

Devonian tetrapods 
 Sinostegia discovery reported in National Geographic
 Devonian Times
 Devonian Times — Tetrapod Trackways
 Scientists find 245 million-year-old burrows of land vertebrates in Antarctica

Carboniferous tetrapods 
 Detailed account of early tetrapod evolution  — This website, geared to the layman, also describes Jennifer Clack's role in untangling the early evolution of tetrapods.
 Abstract of Jennifer A. Clack, "An early tetrapod from 'Romer's Gap'" in Nature, July 2002
 Abstract of Jennifer Clack's identification of a primitive baphetid tetrapod
 "The evolution of tetrapods and the closing of Romer's Gap." 
 "Did Our Ancestors Breathe through Their Ears?"

 
Fosil
Teleostomi
Chordata