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Palaeoplethodon

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Extinct genus of amphibians

Palaeoplethodon
Temporal range: Miocene, 20–15 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
P. hispaniolae holotype
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Plethodontidae
Subfamily: Hemidactyliinae
Genus: †Palaeoplethodon
Poinar and Wake, 2015
Species: †P. hispaniolae
Binomial name
†Palaeoplethodon hispaniolae
Poinar and Wake, 2015

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.

Discovery and description

Restoration

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.

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 ridden debris to the island. It is possible that their extinction was caused by climate change or by extensive predation.

It is most likely a stem-group to the plethodontid tribe Bolitoglossini.

References

  1. ^ 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.
  2. A. R. Williams (2016). "A Tiny Amphibian Trapped in Amber Is a New Species". www.nationalgeographic.com. National Geographic. Archived from the original on March 28, 2016. Retrieved 2016-03-25.
  3. "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.
Taxon identifiers
Palaeoplethodon
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