Teffichthys

Teffichthys Temporal range: Early Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of T. madagascariensis
Restoration of Teffichthys
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Subclass:	Neopterygii
Genus:	†Teffichthys Marramà et al., 2017
Type species
†Perleidus madagascariensis Piveteau, 1934
Other species
†T. elegans Yuan et al., 2022[1]

Teffichthys is an extinct genus of ray-finned fish from the Early Triassic epoch.[2] Fossils have been found in Madagascar and China, and possibly also in Angola, Canada, Greenland, and Svalbard.

Classification

The type species of Teffichthys is Perleidus madagascariensis from the Induan of Madagascar. Perleidus is a Middle Triassic genus; Early Triassic species were referred to this genus based on superficial similarities. In 2017, the genus Teffichthys was erected for "Perleidus" madagascariensis, and the second species from Madagascar ("Perleidus" piveteaui) was synonymized with Teffichthys madagascariensis. Other Early Triassic species currently ascribed to Perleidus might be referrable to Teffichthys, too.[2] Another species, T. elegans, was described from the Early Triassic Guiyang biota of South China.[1]

A phylogenetic analysis placed Teffichthys as a stem-neopterygian closely related to Meidiichthys and Plesiofuro.[3]

References

1. Yuan, Z.; Xu, G.; Dai, X.; Wang, F.; Liu, X.; Jia, E.; Miao, L.; Song, H. (2022). "A new perleidid neopterygian fish from the Early Triassic (Dienerian, Induan) of South China, with a reassessment of the relationships of Perleidiformes". PeerJ. 10: e13448. doi:10.7717/peerj.13448. PMC 9121871. PMID 35602899.
2. Marramà, G.; Lombardo, C.; Tintori, A. & Carnevale, G. (2017). "Redescription of "Perleidus"(Osteichthyes, Actinopterygii) from the Early Triassic of northwestern Madagascar". Rivista Italiana di Paleontologia e Stratigrafia. 123 (2): 219–242. doi:10.13130/2039-4942/8328.
3. Xu, G.-H. (2020). "Feroxichthys yunnanensis gen. et sp. nov. (Colobodontidae, Neopterygii), a large durophagous predator from the Middle Triassic (Anisian) Luoping Biota, eastern Yunnan, China". PeerJ. 8: e10229. doi:10.7717/peerj.10229. PMC 7583626. PMID 33150093.