Salamandroidea
Salamandroidea is a suborder of salamanders, the advanced salamanders. The members of the suborder are found worldwide except for Antarctica, Southern Sahara, and Oceania.
| Salamandroidea Temporal range: fossil range:
157 mya – present | |
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| Salamandra atra | |
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| Suborder: | Salamandroidea
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All members use internal fertilization.[1] The female is fertilized by a spermatophore, a sperm-containing cap put by the male in her cloaca. The sperm is stored in on the roof of the cloaca until it is needed at the time of egg laying.[2]
The earliest known salamandroid fossils are from the Tiaojishan Formation. They are dated to the late Jurassic period about 157 million years ago.[3]
References
- ↑ Miller, Jessica J.. Caudate families (newts & salamanders)Livingunderworld.org. Retrieved 2007-11-09.
- ↑ Sever, David M.. Cloacal anatomy of female salamanders of the plethodontid subfamily Desmognathinae (Amphibia: Urodela). Transactions of the American Microscopical Society 109 (2) (1990). p. 193–204. doi:10.2307/3226814.
- ↑ Gao K.-Q. and Shubin, N.H. (2012). "Late Jurassic salamandroid from western Liaoning, China." Proceedings of the National Academy of Sciences (advance online publication). [1] Archived 2019-09-15 at the Wayback Machine