Ymboirana information

Ymboirana; Temporal range: Oligocene, 28–23 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Gymnophiona
Clade:	Apoda
Family:	Typhlonectidae
Genus:	†Ymboirana; Santos, Wilkinson, do Couto Ribeiro, Carvalho & Zaher, 2024
Species:	†Y. acrux
Binomial name
	†Ymboirana acrux; Santos, Wilkinson, do Couto Ribeiro, Carvalho & Zaher, 2024

Ymboirana was an extinct genus of caecilian described based on a fossil found in the Oligocene Tremembé Formation (Taubaté Basin), Brazil. The holotype and only known specimen comprises a partially preserved skeleton, including parts of the skull and vertebral column. Ymboirana was identified as an extinct representative of the family Typhlonectidae, a subgroup of caecilians well known because its members, unlike all other living caecilians, exhibit an aquatic or semi-aquatic lifestyle when adults.^[1]

^ Santos, R. O.; Wilkinson, M.; Couto Ribeiro, G.; Carvalho, A. B.; Zaher, H. (2024). "The first fossil record of an aquatic caecilian (Gymnophiona: Typhlonectidae)". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zlad188.

[1] Santos, R. O.; Wilkinson, M.; Couto Ribeiro, G.; Carvalho, A. B.; Zaher, H. (2024). "The first fossil record of an aquatic caecilian (Gymnophiona: Typhlonectidae)". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zlad188.

Ymboirana information

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