Search results
Results from the WOW.Com Content Network
The skull of the ancient amphibian, measuring just over an inch (about 2.5 centimeters) long, features big oval eye sockets and — due to its slightly crushed state — a lopsided smile that ...
The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered amphibians. Modern forms are excluded from this list.
For premium support please call: 800-290-4726 more ways to reach us
The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe-finned fishes. [1] Tetrapods (under the apomorphy-based definition used on this page) are categorized as animals in the biological superclass Tetrapoda, which includes all living and extinct amphibians, reptiles, birds, and mammals.
This list of fossil amphibians described in 2020 is a list of new taxa of fossil amphibians that were described during the year 2020, ...
It’s 5.5 inches tall and 5.1 inches wide. The odds of two strangers finding different halves of the same ancient megalodon tooth would seem astronomical, and yet it recently happened in South ...
The vomer bone is much shorter in length than it is in other amphibamids, but similar in proportion to living amphibians. As in most frogs, the palatine bone forms a narrow strip along the side of the palate. Gerobatrachus possesses another modern amphibian characteristic at the back of the skull, a widened bone called the parasphenoid basal
Seymouria is an extinct genus of seymouriamorph from the Early Permian of North America and Europe. [1] Although they were amphibians (in a biological sense), Seymouria were well-adapted to life on land, with many reptilian features—so many, in fact, that Seymouria was first thought to be a primitive reptile.