Ilek_Formation

Ilek Formation
Ilek Formation
Stratigraphic range: Lower Cretaceous,; Barremian–Aptian
	Shestakovo 3 locality
Type	Geological formation
Unit of	Kiya River Basin
Underlies	Kiya Formation
Overlies	Tyazhin Formation
Thickness	Up to 746 metres (2,450 ft)
Lithology
Primary	Clay, siltstone
Other	Marl, sandstone
Location
Coordinates	55.9°N 88.0°E
Approximate paleocoordinates	54.2°N 84.6°E
Region	Western Siberia
Country	Russia
Extent	Kemerovo Oblast
Type section
Named by	L. A. Ragozin
Year defined	1935
	Ilek Formation (Russia) Ilek Formation (Kemerovo Oblast)

Ilek Formation

Geologic formation in Western Siberia, Russia

The Ilek Formation is a Lower Cretaceous geologic formation in Western Siberia. Many different fossils have been recovered from the formation. It overlies the Late Jurassic Tyazhin Formation and underlies the Albian Kiya Formation.^[1]

Quick Facts Type, Unit of ...

The formation was described by L. A. Ragozin in 1935. It consists of sands with sandstone concretions, layers of silts, clays and marls.^[2] Age of the formation, according to a crude 1962 estimate, is Valanginian(?) - Hauterivian - Barremian. Its thickness varies greatly, reaching 746 m in Teguldet borehole.^[3] A more recent 2024 estimate based on invertebrate and vertebrate fossils placed the age of the formation at Barremian–Aptian.^[4]

Fauna

References

[1]
Golovneva, L. B.; Shchepetov, S. V. (April 2010). "Phytostratigraphy of Albian-Cenomanian sediments in the Kiya River basin (the Chulym-Yenisei area of the west Siberian lowland)". Stratigraphy and Geological Correlation. 18 (2): 153–165. Bibcode:2010SGC....18..153G. doi:10.1134/s0869593810020048. ISSN 0869-5938. S2CID 140540821.
[2]
Криштофович А. Н., ed. (1955). "Илекская свита". Геологический словарь. Vol. 1 (А-Л). p. 271. ISBN 9785458366533.
[3]
Лебедев И. В., ed. (1962). Биостратиграфия мезозойских и третичных отложений Западной Сибири. pp. 168–169.
[4]
Ivantsov, S. V.; Fayngerts, A. V.; Feofanova, O. A.; Vladimirova, O. N.; Slobodin, D. A. (2024). "Early Cretaceous continental sedimentatary environments, palaeogeography and biota of southeastern Western Siberia". Geological Society, London, Special Publications. 545. doi:10.1144/SP545-2023-62.
[5]
Averianov, Alexander; Ivantsov, Stepan; Skutschas, Pavel; Faingertz, Alexey; Leshchinskiy, Sergey (2018). "A new sauropod dinosaur from the Lower Cretaceous Ilek Formation, Western Siberia, Russia". Geobios. 51 (1): 1–14. Bibcode:2018Geobi..51....1A. doi:10.1016/j.geobios.2017.12.004. ISSN 0016-6995.
[6]
Bugdaeva, E V; Markevich, V S; Volynets, E B (2017). "Palaeoenvironmental and palaeoclimatic reconstruction of the Early Cretaceous psittacosaur localities, Asia". Proceedings and Field Guidebook for the Fifth International Symposium of International Geoscience Programme IGCP Project 608. Fifth International Symposium of International Geoscience Programme. Jeju Island, Korea. pp. 31–34.
[7]
Skutschas, P. P. (2014). "Kiyatriton leshchinskiyi Averianov et Voronkevich, 2001, a crown-group salamander from the Lower Cretaceous of Western Siberia, Russia". Cretaceous Research. 51: 88–94. doi:10.1016/j.cretres.2014.05.014. ISSN 0195-6671.
[8]
Skutschas, P.; Kolchanov, V.; Anpilogova, E.; Parakhin, I.; Averianov, A.; Jones, M. (2023). "The last of them? A new relic karaurid stem salamander from the Lower Cretaceous of Western Siberia, Russia". Biological Communications. 68 (4): 219–226. doi:10.21638/spbu03.2023.402.
[9]
A. V. Lopatin; E. N. Maschenko & A. O. Averianov (2010). "A new genus of triconodont mammals from the Early Cretaceous of Western Siberia". Doklady Biological Sciences. 433 (1): 282–285. doi:10.1134/S0012496610040137.
[10]
Alexander Averianov; Alexey Lopatin; Pavel Skutschas; Stepan Ivantsov; Elizaveta Boitsova; Ivan Kuzmin (2017). "An enigmatic multituberculate mammal from the Early Cretaceous of Siberia, Russia". Journal of Vertebrate Paleontology. 37 (2): e1293070. doi:10.1080/02724634.2017.1293070.
[11]
Trofimov, B. A. (1978). "The first triconodonts (Mammalia, Triconodonta) from Mongolia". Doklady Akademii Nauk SSSR. 243 (1): 213–216.
[12]
Maschenko, E. N.; Lopatin, A. V. (1998). "First record of an Early Cretaceous triconodont mammal in Siberia". Bull. Inst. R. Sci. Nat. Belg. 68: 233–236.
[13]
Averianov, A. O.; Skutschas, P. P.; Lopatin, A. V.; Leshchinskiy, S. V.; Rezvyi, A. S.; Fayngerts, A. V. (2005). "Early Cretaceous mammals from Bol'shoi Kemchug 3 locality in West Siberia, Russia". Russian Journal of Theriology. 4 (1): 1–12. doi:10.15298/rusjtheriol.04.1.01.
[14]
E. N. Maschenko and A. V. Lopatin. 2002. A new Early Cretaceous mammal from Western Siberia. Doklady Biological Sciences 386:475-477
[15]
Lopatin, A. V.; Averianov, A. O.; Ivantsov, S. V.; Kuzmin, I. T.; Skutschas, P. P. (2023-07-19). "An Upper Molar of a Docodontan (Docodonta, Mammaliaformes) from the Lower Cretaceous of Western Siberia". Doklady Earth Sciences. doi:10.1134/S1028334X23601128. ISSN 1028-334X.
[16]
Maschenko, E. N.; Lopatin, A. V.; Voronkevich, A. V. (2002). "A new genus of the tegotheriid docodonts (Docodonta, Tegotheriidae) from the Early Cretaceous of West Siberia". Russian Journal of Theriology. 1 (2): 75–81. doi:10.15298/rusjtheriol.01.2.01.
[17]
"Fossilworks: Stereognathus".
[18]
Skutschas, Pavel P.; Vitenko, Dmitriy D. (2017-05-04). "Early Cretaceous choristoderes (Diapsida, Choristodera) from Siberia, Russia". Cretaceous Research. 77: 79–92. Bibcode:2017CrRes..77...79S. doi:10.1016/j.cretres.2017.05.004. ISSN 0195-6671.
[19]
Efimov, M. B. and Leshchinskiy, S. V. (2000). First finding of the fossil crocodile skull in Siberia [in Russian]. In: Komarov, A. V., ed., Materialy regional’noj konferencii geologov Sibiri, Dal’nego Vostoka i Severo−Vostoka Rossii. Tom II, 361–363. GalaPress, Tomsk.
[20]
Fiorelli, L.E.; Calvo, J.O. (2007). "The first "protosuchian" (Archosauria: Crocodyliformes) from the Cretaceous (Santonian) of Gondwana" (PDF).
[21]
Averianov, Alexander O.; Ivantsov, Stepan V.; Leshchinskiy, Sergey V.; Skutschas, Pavel P. (2022-09-01). "First pterosaur bone from the Lower Cretaceous of Siberia, Russia". Cretaceous Research. 137: 105230. Bibcode:2022CrRes.13705230A. doi:10.1016/j.cretres.2022.105230. ISSN 0195-6671. S2CID 248136173.
[22]
Skutschas, P. (2006). "Mesozoic amphibians from Siberia, Russia". 9th International Symposium on Mesozoic Terrestrial Ecosystems and Biota, Abstracts and Proceedings Volume: 123–126.
[23]
Alexander O. Averianov; Stepan V. Ivantsov; Pavel P. Skutschas (2020). "Caudal vertebrae of titanosaurian sauropod dinosaurs from the Lower Cretaceous Ilek Formation in Western Siberia, Russia". Cretaceous Research. 107: Article 104309. Bibcode:2020CrRes.10704309A. doi:10.1016/j.cretres.2019.104309. S2CID 210619334.
[24]
Averianov, A.; Podlesnov, A.; Slobodin, D.; Skutschas, P.; Feofanova, O.; Vladimirova, O. (2023). "First sauropod dinosaur remains from the Early Cretaceous Shestakovo 3 locality, Western Siberia, Russia". Biological Communications. 68 (4): 236–252. doi:10.21638/spbu03.2023.404.
[25]
Averianov, A. O.; Leshchinskiy, S. V.; Skutschas, P. P.; Fayngertz, A. V.; Rezvyi, A. S. (2004). "Dinosaurs from the Early Cretaceous Ilek Formation in West Siberia, Russia". Second European Association of Vertebrate Paleontologists Meeting. Abstracts of Papers. 6: 6.
[26]
Averianov, Alexander O.; Voronkevich, Alexei V.; Leshchinskiy, Sergei V.; Fayngertz, Alexei V. (2006). "A ceratopsian dinosaur Psittacosaurus sibiricus from the Early Cretaceous of West Siberia, Russia and its phylogenetic relationships". Journal of Systematic Palaeontology. 4 (4): 359–395. doi:10.1017/s1477201906001933.
[27]
O'Connor, JL; Averianov, AO; Zelenkov, NV (2014). "A confuciusornithiform (Aves, Pygostylia)-like tarsometatarsus from the Early Cretaceous of Siberia and a discussion of the evolution of avian hind". Journal of Vertebrate Paleontology. 34 (3): 647–656. doi:10.1080/02724634.2013.828734.
[28]
Averianov, A. O.; Skutschas, P. P.; Atuchin, A. A.; Slobodin, D. A.; Feofanova, O. A.; Vladimirova, O. N. (2024). "The last ceratosaur of Asia: a new noasaurid from the Early Cretaceous Great Siberian Refugium". Proceedings of the Royal Society B: Biological Sciences. 291 (2023). 20240537. doi:10.1098/rspb.2024.0537.
[29]
Averianov, A.O.; Ivantsov, S.V.; Skutschas, P.P. (2019-06-25). "Theropod teeth from the Lower Cretaceous Ilek Formation of Western Siberia, Russia". Proceedings of the Zoological Institute of the Russian Academy of Sciences (in Russian). 323 (2): 65–84. doi:10.31610/trudyzin/2019.323.2.65. ISSN 0206-0477.
[30]
Evgeny N. Kurochkin; Nikita V. Zelenkov; Alexandr O. Averianov; Sergei V. Leshchinskiy (2011). "A new taxon of birds (Aves) from the Early Cretaceous of Western Siberia, Russia". Journal of Systematic Palaeontology. 9 (1): 109–117. doi:10.1080/14772019.2010.522202.

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This article uses material from the Wikipedia article Ilek_Formation, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.

[Golovneva2010-1] [1]
Golovneva, L. B.; Shchepetov, S. V. (April 2010). "Phytostratigraphy of Albian-Cenomanian sediments in the Kiya River basin (the Chulym-Yenisei area of the west Siberian lowland)". Stratigraphy and Geological Correlation. 18 (2): 153–165. Bibcode:2010SGC....18..153G. doi:10.1134/s0869593810020048. ISSN 0869-5938. S2CID 140540821.

[dict_1955-2] [2]
Криштофович А. Н., ed. (1955). "Илекская свита". Геологический словарь. Vol. 1 (А-Л). p. 271. ISBN 9785458366533.

[Lebedev_1962-3] [3]
Лебедев И. В., ed. (1962). Биостратиграфия мезозойских и третичных отложений Западной Сибири. pp. 168–169.

[Ivantsov2024-4] [4]
Ivantsov, S. V.; Fayngerts, A. V.; Feofanova, O. A.; Vladimirova, O. N.; Slobodin, D. A. (2024). "Early Cretaceous continental sedimentatary environments, palaeogeography and biota of southeastern Western Siberia". Geological Society, London, Special Publications. 545. doi:10.1144/SP545-2023-62.

[Averianov2018-5] [5]
Averianov, Alexander; Ivantsov, Stepan; Skutschas, Pavel; Faingertz, Alexey; Leshchinskiy, Sergey (2018). "A new sauropod dinosaur from the Lower Cretaceous Ilek Formation, Western Siberia, Russia". Geobios. 51 (1): 1–14. Bibcode:2018Geobi..51....1A. doi:10.1016/j.geobios.2017.12.004. ISSN 0016-6995.

[Bugdaeva2017-6] [6]
Bugdaeva, E V; Markevich, V S; Volynets, E B (2017). "Palaeoenvironmental and palaeoclimatic reconstruction of the Early Cretaceous psittacosaur localities, Asia". Proceedings and Field Guidebook for the Fifth International Symposium of International Geoscience Programme IGCP Project 608. Fifth International Symposium of International Geoscience Programme. Jeju Island, Korea. pp. 31–34.

[7] [7]
Skutschas, P. P. (2014). "Kiyatriton leshchinskiyi Averianov et Voronkevich, 2001, a crown-group salamander from the Lower Cretaceous of Western Siberia, Russia". Cretaceous Research. 51: 88–94. doi:10.1016/j.cretres.2014.05.014. ISSN 0195-6671.

[8] [8]
Skutschas, P.; Kolchanov, V.; Anpilogova, E.; Parakhin, I.; Averianov, A.; Jones, M. (2023). "The last of them? A new relic karaurid stem salamander from the Lower Cretaceous of Western Siberia, Russia". Biological Communications. 68 (4): 219–226. doi:10.21638/spbu03.2023.402.

[9] [9]
A. V. Lopatin; E. N. Maschenko & A. O. Averianov (2010). "A new genus of triconodont mammals from the Early Cretaceous of Western Siberia". Doklady Biological Sciences. 433 (1): 282–285. doi:10.1134/S0012496610040137.

[10] [10]
Alexander Averianov; Alexey Lopatin; Pavel Skutschas; Stepan Ivantsov; Elizaveta Boitsova; Ivan Kuzmin (2017). "An enigmatic multituberculate mammal from the Early Cretaceous of Siberia, Russia". Journal of Vertebrate Paleontology. 37 (2): e1293070. doi:10.1080/02724634.2017.1293070.

[11] [11]
Trofimov, B. A. (1978). "The first triconodonts (Mammalia, Triconodonta) from Mongolia". Doklady Akademii Nauk SSSR. 243 (1): 213–216.

[12] [12]
Maschenko, E. N.; Lopatin, A. V. (1998). "First record of an Early Cretaceous triconodont mammal in Siberia". Bull. Inst. R. Sci. Nat. Belg. 68: 233–236.

[Averianov2005-13] [13]
Averianov, A. O.; Skutschas, P. P.; Lopatin, A. V.; Leshchinskiy, S. V.; Rezvyi, A. S.; Fayngerts, A. V. (2005). "Early Cretaceous mammals from Bol'shoi Kemchug 3 locality in West Siberia, Russia". Russian Journal of Theriology. 4 (1): 1–12. doi:10.15298/rusjtheriol.04.1.01.

[14] [14]
E. N. Maschenko and A. V. Lopatin. 2002. A new Early Cretaceous mammal from Western Siberia. Doklady Biological Sciences 386:475-477

[:0-15] [15]
Lopatin, A. V.; Averianov, A. O.; Ivantsov, S. V.; Kuzmin, I. T.; Skutschas, P. P. (2023-07-19). "An Upper Molar of a Docodontan (Docodonta, Mammaliaformes) from the Lower Cretaceous of Western Siberia". Doklady Earth Sciences. doi:10.1134/S1028334X23601128. ISSN 1028-334X.

[16] [16]
Maschenko, E. N.; Lopatin, A. V.; Voronkevich, A. V. (2002). "A new genus of the tegotheriid docodonts (Docodonta, Tegotheriidae) from the Early Cretaceous of West Siberia". Russian Journal of Theriology. 1 (2): 75–81. doi:10.15298/rusjtheriol.01.2.01.

[17] [17]
"Fossilworks: Stereognathus".

[Skutschas2017-18] [18]
Skutschas, Pavel P.; Vitenko, Dmitriy D. (2017-05-04). "Early Cretaceous choristoderes (Diapsida, Choristodera) from Siberia, Russia". Cretaceous Research. 77: 79–92. Bibcode:2017CrRes..77...79S. doi:10.1016/j.cretres.2017.05.004. ISSN 0195-6671.

[19] [19]
Efimov, M. B. and Leshchinskiy, S. V. (2000). First finding of the fossil crocodile skull in Siberia [in Russian]. In: Komarov, A. V., ed., Materialy regional’noj konferencii geologov Sibiri, Dal’nego Vostoka i Severo−Vostoka Rossii. Tom II, 361–363. GalaPress, Tomsk.

[20] [20]
Fiorelli, L.E.; Calvo, J.O. (2007). "The first "protosuchian" (Archosauria: Crocodyliformes) from the Cretaceous (Santonian) of Gondwana" (PDF).

[21] [21]
Averianov, Alexander O.; Ivantsov, Stepan V.; Leshchinskiy, Sergey V.; Skutschas, Pavel P. (2022-09-01). "First pterosaur bone from the Lower Cretaceous of Siberia, Russia". Cretaceous Research. 137: 105230. Bibcode:2022CrRes.13705230A. doi:10.1016/j.cretres.2022.105230. ISSN 0195-6671. S2CID 248136173.

[22] [22]
Skutschas, P. (2006). "Mesozoic amphibians from Siberia, Russia". 9th International Symposium on Mesozoic Terrestrial Ecosystems and Biota, Abstracts and Proceedings Volume: 123–126.

[23] [23]
Alexander O. Averianov; Stepan V. Ivantsov; Pavel P. Skutschas (2020). "Caudal vertebrae of titanosaurian sauropod dinosaurs from the Lower Cretaceous Ilek Formation in Western Siberia, Russia". Cretaceous Research. 107: Article 104309. Bibcode:2020CrRes.10704309A. doi:10.1016/j.cretres.2019.104309. S2CID 210619334.

[24] [24]
Averianov, A.; Podlesnov, A.; Slobodin, D.; Skutschas, P.; Feofanova, O.; Vladimirova, O. (2023). "First sauropod dinosaur remains from the Early Cretaceous Shestakovo 3 locality, Western Siberia, Russia". Biological Communications. 68 (4): 236–252. doi:10.21638/spbu03.2023.404.

[Averianov2004-25] [25]
Averianov, A. O.; Leshchinskiy, S. V.; Skutschas, P. P.; Fayngertz, A. V.; Rezvyi, A. S. (2004). "Dinosaurs from the Early Cretaceous Ilek Formation in West Siberia, Russia". Second European Association of Vertebrate Paleontologists Meeting. Abstracts of Papers. 6: 6.

[26] [26]
Averianov, Alexander O.; Voronkevich, Alexei V.; Leshchinskiy, Sergei V.; Fayngertz, Alexei V. (2006). "A ceratopsian dinosaur Psittacosaurus sibiricus from the Early Cretaceous of West Siberia, Russia and its phylogenetic relationships". Journal of Systematic Palaeontology. 4 (4): 359–395. doi:10.1017/s1477201906001933.

[27] [27]
O'Connor, JL; Averianov, AO; Zelenkov, NV (2014). "A confuciusornithiform (Aves, Pygostylia)-like tarsometatarsus from the Early Cretaceous of Siberia and a discussion of the evolution of avian hind". Journal of Vertebrate Paleontology. 34 (3): 647–656. doi:10.1080/02724634.2013.828734.

[Kiyacursor-28] [28]
Averianov, A. O.; Skutschas, P. P.; Atuchin, A. A.; Slobodin, D. A.; Feofanova, O. A.; Vladimirova, O. N. (2024). "The last ceratosaur of Asia: a new noasaurid from the Early Cretaceous Great Siberian Refugium". Proceedings of the Royal Society B: Biological Sciences. 291 (2023). 20240537. doi:10.1098/rspb.2024.0537.

[Averianov2019-29] [29]
Averianov, A.O.; Ivantsov, S.V.; Skutschas, P.P. (2019-06-25). "Theropod teeth from the Lower Cretaceous Ilek Formation of Western Siberia, Russia". Proceedings of the Zoological Institute of the Russian Academy of Sciences (in Russian). 323 (2): 65–84. doi:10.31610/trudyzin/2019.323.2.65. ISSN 0206-0477.

[30] [30]
Evgeny N. Kurochkin; Nikita V. Zelenkov; Alexandr O. Averianov; Sergei V. Leshchinskiy (2011). "A new taxon of birds (Aves) from the Early Cretaceous of Western Siberia, Russia". Journal of Systematic Palaeontology. 9 (1): 109–117. doi:10.1080/14772019.2010.522202.

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[5]

[6]

[7]

[8]

[9]

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[14]

[15]

[16]

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[24]

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[30]

Genus	Species	Locality	Material	Notes	Images
Kiyatriton	K. leshchinskiyi^[7]	Shestakovo 1	Atlas, trunk vertebrae, fragmentary dentaries, femora, humerus, and nearly complete ilium	A crown-group salamander
Kuzbassia	K. sola^[8]	Shestakovo 1	Two atlantal centra and a trunk vertebral centrum	A karaurid

Genus	Species	Locality	Material	Notes
Acinacodus	A. tagaricus^[9]		Right dentary fragment	An amphidontid mammal
Baidabatyr	B. clivosus^[10]	Bol'shoi Kemchug 3	Upper premolar	A multituberculate
Gobiconodon	G. borissiaki^[11]		21 upper and lower jaws.	A gobiconodont
Gobiconodon	G. hoburensis^[12]		A fragmentary lower jaw.	A gobiconodont
Kemchugia	K. magna^[13]		A tooth	An amphilestid mammal
Kiyatherium	K. cardiodens^[14]		A maxilla	A zhangheotheriid mammal
Sibirotherium	S. rossicum^[15]	Bol'shoi Kemchug 4	M1 tooth;^[15] mandibular fragments^[16]	A docodontan mammaliaform
Xenocretosuchus	X. sibiricus^[17]		Dental elements	A tritylodontid mammaliamorph
Yermakia	Y. domitor^[13]	Shestakovo 1	A mandible	A tinodontid mammal

Genus	Species	Locality	Material	Notes
cf. Khurendukhosaurus^[18]	K. cf. sp	Bol'shoi Kemchug 3	Dorsal vertebra, sacral vertebra	A non-neochoristodere choristodere
"Shestakovo choristodere"^[18]		Shestakovo Bol'shoi Kemchug 3 Bol'shaya Terekhtul' 2	Fragmentary dentaries, several vertebrae, rib fragments	A possible neochoristodere
Choristodera^[18]	Indeterminate	Smolenskii Yar	Cervical centrum	May represent a taxon distinct from both Khurendukhosaurus and the "Shestakovo choristodere"

Genus	Species	Locality	Notes
Paramacellodidae	Indeterminate^[4]	Kemchug assemblage Kiya assemblage
Platynota	Indeterminate^[4]	Kemchug assemblage
Xenosauridae	Indeterminate^[4]	Kemchug assemblage Kiya assemblage	A knob-scaled lizard

Genus	Species	Locality	Material	Notes	Images
Kyasuchus	K. saevi^[19]	Shestakovo 3	A partial skull	A shartegosuchid crocodyliform
Tagarosuchus	T. kulemzini^[20]	Shestakovo 3	Nearly complete skull	A crocodyliform

Ilek_Formation

Ilek Formation

Age

Fauna

Amphibians

Mammaliamorphs

Choristoderes

Lizards

Turtles

Crocodylomorphs

Pterosaurs

Dinosaurs

Sauropodomorphs

Ornithischians

Theropods

See also

References

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Ilek Formation
Stratigraphic range: Lower Cretaceous, Barremian–Aptian
Shestakovo 3 locality
Type	Geological formation
Unit of	Kiya River Basin
Underlies	Kiya Formation
Overlies	Tyazhin Formation
Thickness	Up to 746 metres (2,450 ft)
Lithology
Primary	Clay, siltstone
Other	Marl, sandstone
Location
Coordinates	55.9°N 88.0°E / 55.9; 88.0
Approximate paleocoordinates	54.2°N 84.6°E / 54.2; 84.6
Region	Western Siberia
Country	Russia
Extent	Kemerovo Oblast
Type section
Named by	L. A. Ragozin
Year defined	1935
Ilek Formation (Russia) Show map of Russia Ilek Formation (Kemerovo Oblast) Show map of Kemerovo Oblast

Genus	Species	Locality	Material	Notes
?Ctenochasmatidae	Indeterminate^[13]	Bol'shoi Kemchug 3
Lonchognathosaurus	L. cf. sp.^[21]	Novochernorechensk	Wing metacarpal fragment	A dsungaripterid
Ornithocheiridae	Indeterminate^[22]	Shestakovo 1
Pterodactyloidea	Indeterminate^[13]	Bol'shoi Kemchug 3

Genus	Species	Locality	Material	Notes	Images
Lithostrotia	Indeterminate^[23]		Caudal vertebrae	Potentially three distinct taxa of titanosaur
Sibirotitan	S. astrosacralis^[5]	Shestakovo 1 Shestakovo 3^[24]	Vertebrae, sacrum, and pedal elements	A somphospondylan sauropod

Genus	Species	Locality	Material	Notes
Ornithischia	Indeterminate^[4]	Shestakovo 1 Bol'shoi Kemchug 3	Isolated teeth	Originally identified as two distinct "hypsilophodontid" taxa^[25]
Psittacosaurus	P. sibiricus^[26]	Shestakovo	Several skeletons	A ceratopsian
Stegosauria	Indeterminate^[13]	Bol'shoi Kemchug 3	Isolated teeth^[25]

Genus	Species	Locality	Material	Notes
Evgenavis	E. nobilis^[27]		A set of limb elements	A confuciusornithiform
Kiyacursor	K. longipes^[28]	Shestakovo 1	Partial skeleton including cervical and caudal vertebrae, cervical and dorsal ribs, a left scapulocoracoid, humeri, and much of both hind limbs^[28]	A noasaurid theropod
Paraves	Indeterminate^[29]		Teeth	May belong to either Microraptorinae or Troodontidae
Mystiornis	M. cyrili^[30]	Shestakovo 1	Isolated metatarsus	An avisaurid enantiornithean
Paraves	Indeterminate^[29]		Teeth	May belong to either Microraptorinae or Troodontidae
Tyrannosauroidea	Indeterminate^[29]		Teeth
Urbacodon	U. cf. sp.^[29]		Teeth	A troodontid with unserrated teeth