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Rhipidistia

Rhipidistia (class Osteichthyes, subclass Crossopterygii) A group of ‘tasselfinned’ fish that lived from the Devonian to the Permian Periods. They possessed two dorsal fins, lobate or stalked pectoral and pelvic fins, a heterocercal or diphycercal tail fin, and internal nares. Distantly related to the living coelacanth, they are considered by some to be ancestral to the tetrapod, terrestrial vertebrates (i.e. Amphibia).

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"Rhipidistia." A Dictionary of Zoology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"Rhipidistia." A Dictionary of Zoology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rhipidistia-0

"Rhipidistia." A Dictionary of Zoology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rhipidistia-0

Rhipidistia

Rhipidistia Group of crossopterygian (‘tassel-finned’) fish ranging from the Devonian to the Permian. They possessed two dorsal fins, lobate or stalked pectoral and pelvic fins, and internal nostrils. Distantly related to the living coelacanth, they are considered by some to be ancestral to the Tetrapoda (terrestrial vertebrates).

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"Rhipidistia." A Dictionary of Earth Sciences. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"Rhipidistia." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rhipidistia

"Rhipidistia." A Dictionary of Earth Sciences. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rhipidistia