The Lissamphibia (from Greek λισσός (lissós, "smooth") + ἀμφίβια (amphíbia), meaning "smooth amphibians") is a group of tetrapods that includes all modern amphibians.

2024年5月21日 · Lissamphibia consists of three orders: frogs/toads, salamanders, and the limbless caecilans. The earliest known members of subclass Amphibia are basal temnospondyls dated to 340 million years ago, in the Early Carboniferous.

…three orders make up subclass Lissamphibia. Neither the lissamphibians nor any of the extinct groups of amphibians were the ancestors of the group of tetrapods that gave rise to reptiles. Though some aspects of the biology and anatomy of the various amphibian groups might demonstrate features possessed by reptilian ancestors,…

That is, relative to extinct, "amphibian"-grade taxa, Lissamphibia is monophyletic and nested within lepospondyls. Compared to mammals and birds (including dinosaurs), crown amphibian branches of the Tree of Life are exceptionally old.

The subclass Lissamphibia includes all living amphibians. They are classified in three orders: the Gymnophiona or Apoda: the limbless caecilians. Although the ancestry of each group is controversial, [1] all share certain common characteristics. This indicates they evolved from a common ancestor and so form a clade. ↑ Carroll, Robert 2009.

The meaning of LISSAMPHIBIA is a primary division of smooth-skinned amphibians comprising the existing orders.

Living amphibians (Lissamphibia) are highly successful tetrapods that evolved diverse body plans that differ in modes of locomotion, reproductive specializations, and life histories (1, 2).

2007年6月1日 · Fourteen combinations of minimal branch length settings and 10 random resolutions for each polytomy give much more recent minimal origination times of lissamphibian taxa than recent studies based on a phylogenetic analyses of molecular sequences.

The Lissamphibia (from Greek λισσός (lissós, "smooth") + ἀμφίβια (amphíbia), meaning "smooth amphibians") is a group of tetrapods that includes all modern amphibians.

This hypothesis of caecilian origins closes a substantial morphologic and temporal gap and explains the appeal of morphology-based polyphyly hypotheses for the origins of Lissamphibia while reconciling molecular support for the group’s monophyly.