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Triadobatrachus
| Scientific Classification |
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Triadobatrachus is arguably the earliest known frog (some scientists
might consider it to be frog-like, rather than a frog, and an earlier
animal, apparently intermediate between frogs and salamanders,
known as Gerobatrachus
is also known). Triadobatrachus lived
during the early Triassic
period in what is today Madagascar.
Triadobratrachus was about 4 inches (10 centimeters) long. It differed
from modern frogs in a number of ways, most noteably by having 14
vertebrae (modern frogs have between 4 and 9 vertebrae) - including
6 vertebrae which formed a short tail that the animal retained into
adulthood. Triadobratrachus probably swam by kicking its powerful hind
legs, but is thought to have been incapable of jumping. On the other hand,
the animal's skull was similar to that of modern frogs.
Triadobratrachus is thought to have an ancestor, or a close-relative of
an ancestor of subsequent modern frogs.
Triadobatrachus Timeline:
Triadobatrachus
Related Information & Resources
See Also
Triadobatrachus Books
Here are some books from Amazon.com:
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By Barry Clarke
DK CHILDREN
Hardcover (72 pages)
 | List Price: $16.99*
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Click Here | Product Description:
Frogs, toads, newts, salamanders, and the rare caecilians come in a stunning array of colors, shapes, sizes and habitats. They live both in water and on land and move in a great variety of ways from swimming, to hopping and even flying. With a series of specially commissioned photographs, Amphibian looks in close-up at the fascinating natural history of these creatures from the bright green, red-eyed tree frogs to dull, burrowing, worm-like caecilians; from startling black and yellow fire salamanders to tiny transparent glass frogs. |
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By Michel Laurin
University of California Press
Hardcover (216 pages)
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More than three hundred million years ago--a relatively recent date in the two billion years since life first appeared--vertebrate animals first ventured onto land. This usefully illustrated book describes how some finned vertebrates acquired limbs, giving rise to more than 25,000 extant tetrapod species. Michel Laurin uses paleontological, geological, physiological, and comparative anatomical data to describe this monumental event. He summarizes key concepts of modern paleontological research, including biological nomenclature, paleontological and molecular dating, and the methods used to infer phylogeny and character evolution. Along with a discussion of the evolutionary pressures that may have led vertebrates onto dry land, the book also shows how extant vertebrates yield clues about the conquest of land and how scientists uncover evolutionary history. |
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By J. Alan Holman
Indiana University Press
Released: 2003-12-25
Hardcover (264 pages)
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The heart of this book consists of detailed systematic accounts of the known fossil frogs and toads (anurans) of North America and their localities. Extinct fossil frogs and toads are fully discussed and illustrated, and in some cases are re-diagnosed and re-described. For fossil taxa still living, the book gives the modern characteristics, ecological attributes, and modern ranges, and includes illustrations of diagnostic skeletal elements. The volume begins with an overview of the anurans and anuran studies, a general account of the skeleton and bones, and a discussion of the early evolution of the Anura, along with the formal classification of anuran taxonomic groups found in the North American fossil record. The third part of the book presents an epoch-by-epoch discussion of Mesozoic, Tertiary, and Pleistocene anurans, the classification and phylogeny of the anurans, and a comprehensive list of references. |
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Cornell University Press
Hardcover (576 pages)
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