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The Balabansai Formation (sometimes transcribed Balabansay ,[1] also known as Balabansai Svita ) is a geological formation in Kazakhstan, Kyrgyzstan and Uzbekistan whose strata date back to the Bathonian and Callovian stages of the Middle Jurassic . Dinosaur remains are among the fossils that have been recovered from the formation.[2] The lithology primarily consists of variegated sandstones, siltstones, claystones, and rare gravels and marls.[3] Many taxa have been found in the formation, including amphibians[4] and mammals.[5]
Vertebrate paleofauna [ edit ]
Indeterminate Avialae remains located in Ongtustik Qazaqstan Oblysy , Kazakhstan.[2]
Amphibians [ edit ]
Turtles [ edit ]
Lizards [ edit ]
Choristoderes [ edit ]
Choristoderes of the Balabansai Formation
Genus
Species
Presence
Notes
Choristodera
Indeterminate
Similar to Cteniogenys
Crocodyliformes [ edit ]
Dinosaurs [ edit ]
Pterosaurs [ edit ]
Mammals
Genus
Species
Presence
Notes
Rhamphorhynchinae indet.[3]
Genus and species indeterminate
Kyrgyzstan
Mammals [ edit ]
Invertebrate paleofauna [ edit ]
Molluscs [ edit ]
Conifers [ edit ]
See also [ edit ]
References [ edit ]
^ a b c De Pelsmaeker, Elien; Jolivet, Marc; Laborde, Amandine; Poujol, Marc; Robin, Cécile; Zhimulev, Fedor I.; Nachtergaele, Simon; Glorie, Stijn; De Clercq, Shana; Batalev, Vladislav Yu.; De Grave, Johan (2018). "Source-to-sink dynamics in the Kyrgyz Tien Shan from the Jurassic to the Paleogene: Insights from sedimentological and detrital zircon U-Pb analyses" (PDF) . Gondwana Research . 54 : 180–204. Bibcode :2018GondR..54..180D . doi :10.1016/j.gr.2017.09.004 . ISSN 1342-937X .
^ a b c d e Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 550–552. ISBN 0-520-24209-2 .
^ a b c d e AVERIANOV, ALEXANDER O.; MARTIN, THOMAS; BAKIROV, AIZEK A. (January 2005). "Pterosaur and dinosaur remains from the Middle Jurassic Balabansai Svita in the northern Fergana Depression, Kyrgyzstan (Central Asia)" . Palaeontology . 48 (1): 135–155. Bibcode :2005Palgy..48..135A . doi :10.1111/j.1475-4983.2004.00437.x . ISSN 0031-0239 . S2CID 55249438 .
^ Skutschas, Pavel P. (2013-10-01). "Mesozoic salamanders and albanerpetontids of Middle Asia, Kazakhstan, and Siberia". Palaeobiodiversity and Palaeoenvironments . 93 (4): 441–457. doi :10.1007/s12549-013-0126-8 . ISSN 1867-1594 . S2CID 140159226 .
^ Martin, Thomas; Averianov, Alexander O. (2010-05-18). "Mammals from the Middle Jurassic Balabansai Formation of the Fergana Depression, Kyrgyzstan". Journal of Vertebrate Paleontology . 30 (3): 855–871. Bibcode :2010JVPal..30..855M . doi :10.1080/02724631003758045 . ISSN 0272-4634 . S2CID 128716878 .
^ AVERIANOV, ALEXANDER O.; MARTIN, THOMAS; SKUTSCHAS, PAVEL P.; REZVYI, ANTON S.; BAKIROV, AIZEK A. (2008-01-25). "Amphibians from the Middle Jurassic Balabansai Svita in the Fergana Depression, Kyrgyzstan (Central Asia)" . Palaeontology . 51 (2): 471–485. Bibcode :2008Palgy..51..471A . doi :10.1111/j.1475-4983.2007.00748.x . ISSN 0031-0239 .
^ Alifanov, Vladimir R.; Averianov, Alexander O. (2003-06-17). "Ferganasaurus verzilini, gen. et sp. nov., a new neosauropod (Dinosauria, Saurischia, Sauropoda) from the Middle Jurassic of Fergana Valley, Kirghizia" (PDF) . Journal of Vertebrate Paleontology . 23 (2): 358–372. doi :10.1671/0272-4634(2003)023[0358:fvgesn]2.0.co;2 . ISSN 0272-4634 . S2CID 85902362 .
^ Averianov, A. O.; Bakirov, A. A.; Martin, T. (2007). "First definitive stegosaur from the Middle Jurassic of Kyrgyzstan" . Paläontologische Zeitschrift . 81 (4): 440–446. doi :10.1007/BF02990255 . ISSN 0031-0220 . S2CID 129163170 .
^ Martin, Thomas; Averianov, Alexander O. (2004-03-25). "A new docodont (Mammalia) from the Middle Jurassic of Kyrgyzstan, central Asia" (PDF) . Journal of Vertebrate Paleontology . 24 (1): 195–201. Bibcode :2004JVPal..24..195M . doi :10.1671/15 . ISSN 0272-4634 . S2CID 55118845 .
^ a b c d e f Кузичкина, Ю. М. (1979). "Балабансайская Свита". In Министерство геологии СССР (ed.). Стратиграфический словарь СССР: Триас, Юра, Мелсборник [Stratigraphic Dictionary of the USSR: Triassic, Jurassic, Cretaceous ] (PDF) . Leningrad: Недра . p. 49.