Boschung, Herbert T. Formerly, Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama.
Last reviewed:October 2015
Show previous versions
- Links to Primary Literature
- Additional Readings
A class of vertebrates containing the lobe-finned fishes, including the coelacanths and lungfishes, as well as the tetrapods. The class Sarcopterygii comprises the orders Coelacanthiformes (coelacanths), Ceratodontiformes (Australian lungfish), and Lepidosireniformes (South American and African lungfishes), as well as the Tetrapoda (often considered as a superclass or infraclass). Exclusive of the tetrapods, the extant members of the Sarcopterygii (sarcopterygians) are assigned to two subclasses: Coelacanthimorpha and Dipnoi. The subclass Coelacanthimorpha contains the order Coelacanthiformes, consisting of two extant species of coelacanths in the family Latimeriidae. The subclass Dipnoi contains two orders: Ceratodontiformes, consisting of one extant species of Australian lungfish in the family Ceratodontidae; and Lepidosireniformes, consisting of one extant species of South American lungfish in the family Lepidosirenidae and four extant species of African lungfishes in the family Protopteridae (see illustration). There are also numerous extinct taxa known only from fossils. See also: Coelacanthiformes; Dipnoi; Extinction (biology); Fossil; Osteichthyes; Tetrapoda
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Its dedicated editorial team is led by Sagan Award winner John Rennie. Contributors include more than 9000 highly qualified scientists and 39 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 17,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information