Definição e significado de Salamandroidea

Salamandroidea Temporal range: 157–0 Ma PreЄ Є O S D C P T J K Pg N
Salamandra atra
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Caudata
(unranked):	Urodela
Suborder:	Salamandroidea Fitzinger, 1826
Families
Ambystomatidae Amphiumidae Dicamptodontidae Plethodontidae Proteidae Rhyacotritonidae Salamandridae

Salamandroidea is a suborder of salamanders, referred to as advanced salamanders. The members of the suborder are found worldwide except for Antarctica, Southern Sahara, and Oceania. They differ from suborder Cryptobranchoidea as their angular and prearticular bones in their lower jaw are fused and all members are internal fertilizers. ^[1] The female is fertilized by means of a spermatophore, a sperm-containing cap that is placed by the male in her cloaca. The sperm is stored in spermathecae on the roof of the cloaca until it is needed at the time of oviposition. ^[2]

The earliest known salamandroid fossils are specimens of the species Beiyanerpeton jianpingensis from the Tiaojishan Formation, dated to the late Jurassic period about 157 million (plus or minus 3 million) years ago.^[3]

  References

Caudate families by suborder Kingdom Animalia Phylum Chordata Subphylum Craniata Superclass Tetrapoda Class Amphibia Cryptobranchoidea Cryptobranchidae Hynobiidae Salamandroidea Ambystomatidae Amphiumidae Dicamptodontidae Plethodontidae Proteidae Rhyacotritonidae Salamandridae Sirenoidea Sirenidae

This salamander article is a stub. You can help Wikipedia by expanding it.