Abstract
Based on fragmentary remains (incomplete lower jaw and premaxilla) from the Lower Triassic Kamennyi Dol locality (Kamennyi Yar Formation, Rybinskian Horizon) of Obshchii Syrt (Samara Region) and a number of specimens from the same region, a new genus and species of trematosauroid temnospondyls, Qantas samarensis gen. et sp. nov., is described. It displays a mosaic combination of typical benthosuchid and trematosaurid characters, remaining in general structure of the lower jaw at the benthosuchid evolutionary level, so that a new benthosuchid subfamily, Qantasinae subfam. nov., representing an isolated lineage, is established. Based on the cranial remains of trematosaurid temnospondyls from the Cynognathus Zone of South Africa, which were previously described by Shishkin and Welman (1994), a new trematosaurine genus and species, Trematosuchoides africanus gen. et sp. nov., is established.
Similar content being viewed by others
References
Blom, G.I., Katalog mestonakhozhdenii faunisticheskikh ostatkov v nizhnetriasovykh otlozheniyakh Srednego Povolzh’ya i Prikam’ya (Catalogue of Faunal Localities in the Lower Triassic Deposits of the Middle Volga and Kama Regions), Kazan: Kazan. Gos. Univ., 1968.
Damiani, R., Cranial Anatomy and Relationships of Micro-posaurus casei, a Temnospondyl from the Middle Triassic of South Africa, J. Vertebr. Paleontol., 2004, vol. 24, no. 3, pp. 533–541.
Damiani, R., Neveling, J., Hancox, P.L., and Rubidge, B.S., First Trematosaurid Temnospondyl from the Lystrosaurus Assemblage Zone of South Africa and Its Biostratigraphic Implications, Geol. Mag., 2000, vol. 137, no. 6, pp. 659–665.
Getmanov, S.N., Triasovye amfibii Vostochno-Evropeiskoi platformy (Triassic Amphibians of the East European Platform), Moscow: Nauka, 1989.
Ivakhnenko, M.F., Golubev, V.K., Gubin, Yu.M., et al., Permskie i triasovye tetrapody Vostochnoi Evropy (Permian and Triassic Tetrapods of Eastern European), Moscow: GEOS, 1997.
Lehman, J.-P., Nouveaux trematosaures de Madagascar: les stégocéphales Malgaches et leur paléoecologie, Ann. Paléontol. Vertébr., 1979, vol. 65, pp. 35–53.
Molostovskii, E.A., Paleomagnitnaya stratigrafiya verkhnei permi i triasa vostoka Evropeiskoi chasti SSSR (Paleomagnetic Stratigraphy of the Upper Permian and Triassic of the East European Soviet Union), Saratov: Saratov Gos. Univ., 1983.
Nield, C.M., Damiani, R., and Warren, A., A Short-Snouted Trematosauroid (Tetrapoda, Temnospondyli) from the Early Triassic of Australia: The Oldest Known Tremato-saurine, Alcheringa, 2006, no. 30, pp. 263–271.
Novikov, I.V., New Early Triassic Labyrinthodonts of the Middle Fore-Urals, Paleontol. Zh., 1990, no. 1, pp. 86–100.
Novikov, I.V., Biostratigrafiya kontinental’nogo triasa Timano-Severoural’skogo regiona po faune tetrapod (Biostratigraphy of Continental Triassic Timan-North Ural Region Based on the Tetrapod Faun), Moscow: Nauka, 1994.
Novikov, I.V., New Data on Trematosauroid Labyrinthodonts of Eastern Europe: 1. The Genus Inflectosaurus Shishkin, 1960, Paleontol. Zh., 2007, no. 2, pp. 51–58.
Novikov, I.V., New Data on Trematosauroid Labyrinthodonts of Eastern Europe: 2. Trematosaurus galae sp. nov.: Skull Morphology, Paleontol. Zh., 2010, no. 4, pp. 94–104.
Reshenie Mezhvedomstvennogo stratigraficheskogo soveshchaniya po triasu Vostochno-Evropeiskoi platformy (Saratov, 1979 g.) (Resolution of International Stratigraphic Conference on the Triassic of East European Platform, Saratov, 1979), Leningrad: VSEGEI, 1982.
Schoch, R.R., A Complete Trematosaurid Amphibian from the Middle Triassic of Germany, J. Vertebr. Paleontol., 2006, vol. 26, no. 1, pp. 29–43.
Schoch, R.R. and Milner, A.R., Stereospondyli, Encyclopedia of Paleoherpetology München: Dr. Friedrich Pfeil, 2000, part 3B.
Shishkin, M.A., Morfologiya drevnikh zemnovodnykh i problemy evolyutsii nizshikh tetrapod (Morphology of Early Amphibians and Evolutionary Problems of Lower Tetrapods), Moscow: Nauka, 1973.
Shishkin, M.A., The Patterns of Recovery of Tetrapod Communities in the Early Triassic of Europe and Southern Gondwana: A Comparison and Implications, Albertiana, 2005, no. 33, pp. 71–73.
Shishkin, M.A., Initial Diversification of Amphibians after the Terminal Permian Crisis, in Paleontologiya i stratigrafiya permi i triasa Severnoi Evrazii. Materialy V Mezhdunarodnoi konferentsii, posvyashchennoi 150-letiyu so dnya rozhdeniya Vladimira Prokhorovicha Amalitskogo (1860–1917) (Moskva, 22–23 noyabrya 2010 g.) (5th International Conference on the Paleontology and Stratigraphy of the Permian and Triassic of Northern Eurasia, Dedicated to the 150th Anniversary of the Birthday of Vladimir Prokhorovich Amalitzky (1860–1917), Moscow, November 22–23, 2010), Moscow, 2010, pp. 119–122.
Shishkin, M.A., Ochev, V.G., Lozovskii, V.R., and Novikov, I.V., Tetrapod Biostratigraphy of the Triassic of Eastern Europe, in The Age of Dinosaurs in Russia and Mongolia, Benton, M.J., Shishkin, M.A., Unwin, D.M., and Kurochkin, E.N, Eds., Cambridge: Cambridge Univ. Press, 2000, pp. 120–139.
Shishkin, M.A., Sennikov, A.G., Novikov, I.V., and Il’ina, N.V., Differentiation of Tetrapod Communities and Certain Features of Biotic Events in the Early Triassic of Eastern Europe, Paleontol. Zh., 2006, no. 1, pp. 3–12.
Shishkin, M.A. and Welman, J., A New Find of Trematosuchus (Amphibia, Temnospondyli) from the Cynognathus Zone of South Africa, Palaeontol. Afr., 1994, vol. 31, pp. 39–49.
Tverdokhlebov, V.P., Lower Triassic of Obshchii Syrt, in Paleontologiya i stratigrafiya permi i triasa Severnoi Evrazii. IV Vserossiiskaya konferentsiya, 4–5 aprelya 2002, Moskva. Tezisy dokladov (4th International Conference on the Paleontology and Stratigraphy of the Permian and Triassic of Northern Eurasia, Moscow, April 4–5, 2002), Moscow, 2002, pp. 93–94.
Tverdokhlebov, V.P., Tverdokhlebova, G.I., Surkov, M.V., and Benton, M.J., Tetrapod Localities from the Triassic of the SE of European Russia, Earth Sci. Rev., 2002, vol. 60, pp. 1–66.
Verkhnepermskie i nizhnetriasovye otlozheniya Moskovskoi sineklizy (Upper Permian and Lower Triassic Deposits of the Moscow Syneclise), Moscow: Nedra, 1984.
Vorobyeva, E.I., Morfologiya i osobennosti evolyutsii kisteperykh ryb (Morphology and Evolutionary Features of Crossopterygians), Moscow: Nauka, 1977.
Wiman, C., Über die Stegocephalen aus der Trias Spitzbergens, Bull. Geol. Inst. Uppsala, 1914 (1915), vol. 13, pp. 1–34.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © I.V. Novikov, 2012, published in Paleontologicheskii Zhurnal, 2012, No. 2, pp. 68–77.
Rights and permissions
About this article
Cite this article
Novikov, I.V. New data on trematosauroid labyrinthodonts of Eastern Europe: 3. Qantas samarensis gen. et sp. nov.. Paleontol. J. 46, 177–186 (2012). https://doi.org/10.1134/S0031030112020098
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0031030112020098