Palaeoplethodon
| Palaeoplethodon Temporal range: Miocene, 20–30 Ma | |
|---|---|
 | |
| P. hispaniolae holotype | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Urodela |
| Family: | Plethodontidae |
| Genus: | †Palaeoplethodon Poinar and Wake, 2015[1] |
| Species: | †P. hispaniolae |
| Type species | |
| †Palaeoplethodon hispaniolae Poinar and Wake, 2015[1] | |
Palaeoplethodon hispaniolae is an extinct salamander species found in Miocene Dominican amber from the Dominican Republic. It is so far the only salamander species known to have existed in the Caribbean.[1][2]
Discovery and description
The only known specimen was a juvenile found in an amber mine in the mountain range between Puerto Plata and Santiago. The amber itself was from the extinct legume species Hymenaea protera. The salamander is missing its left front leg, implying possible predation. Its legs did not have any distinct toes, rather, it had complete webbing with small bumps on it. It most likely lived in small trees or in tropical flowers.[1]
It is unknown how this salamander's lineage arrived to the area, and how it became extinct. They may have arrived by a land bridge, or they may have rode debris to the island. It is possible that their extinction was caused by climate change or by extensive predation.[1][3]
It is most likely a stem-group to the plethodontid tribe Bolitoglossini.[1]
References
- 1 2 3 4 5 6 Poinar Jr., G.; Wake, David B. (2015). "Palaeoplethodon hispaniolae gen. n., sp. n. (Amphibia: Caudata), a fossil salamander from the Caribbean" (PDF). Palaeodiversity. 8: 21–29.
- ↑ A. R. Williams (2016). "A Tiny Amphibian Trapped in Amber Is a New Species". www.nationalgeographic.com. National Geographic. Retrieved 2016-03-25.
- ↑ "First-ever discovery of a salamander in amber sheds light on evolution of Caribbean islands". oregonstate.edu. Oregon State University, News and Research Communications. 17 August 2015. Retrieved 2016-03-25.