PBDB Collection

Tagay 1 (Miocene of Russian Federation)

Where: Irkutsk, Russian Federation (53.1° N, 107.2° E: paleocoordinates 53.7° N, 106.8° E)

• coordinate estimated from map

When: Tagay Khalagay Formation, MN 5 (16.0 - 13.7 Ma)

• "While current data indicates correlation of Tagay fauna with Chinese Shangwangian faunas and its correlation with MN 5 of the European Neogene Mammal biochronological system (Steininger, 1999), wider estimates in the range of early to middle Miocene have also been published (Daxner-Höck et al., 2013; Qiu et al., 2013)." - Tentatively marked as MN5 here since in the GTS 2012 it spans the early to middle Miocene anyway.

Environment/lithology: lacustrine; sandstone and claystone

• "Here, the Tagay Khalagay Formation Miocene lacustrine deposits outcrop from the bay’s north-eastern coastal cliff... although the fauna indicates warm climate and a mostly forested environment, there are some taxa from open habitats."

• The Tagay section exposes approximately 20 meters of sands, clays, and secondary carbonates beds. The section was divided into eight fossil-bearing beds yielding diverse and abundant vertebrate fauna.

Size classes: macrofossils, mesofossils

Collected by Russian Academy of Sciences

Collection methods: bulk, sieve

Primary reference: A. Čerňanský, E. V. Syromyatnikova, E. S. Kovalenko, K. M. Podurets, and A. A. Kaloyan. 2019. The key to understanding the European Miocene Chalcides (Squamata, Scincidae) comes from Asia: the lizards of the East Siberian Tagay locality (Baikal Lake) in Russia. The Anatomical Record [P. Mannion/P. Mannion/T. Cleary]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 205812: authorized by Terri Cleary, entered by Terri Cleary on 23.10.2019, edited by Mark Uhen and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Aves
Anseriformes - Anatidae	Chenoanas sansaniensis² Chenoanas sansaniensis² Milne-Edwards 1867 waterfowl
Reptilia
Squamata - Scincidae	Chalcides augei n. sp. Chalcides augei n. sp. Čerňanský et al. 2019 skink ZIN PH 265/181 (holotype), parietal; paratypes: 273/181, one right maxilla; 274/181–276/181, three left maxillae; 261/181–264/181, four frontals; 266/181–272/181, seven dentaries
Squamata - Lacertidae	Lacertidae indet. Lacertidae indet. Bonaparte 1831 squamates ZIN PH 260/181, fragment of right dentary
Mammalia
Theriamorpha - Talpidae	Urotrichini indet.¹, Quyania sp.¹, Yanshuella cf. primaeva¹, Desmanodon sp.¹, Desmaninae indet.¹ Urotrichini indet.¹ Dobson 1883 mole Quyania sp.¹ Storch and Qiu 1983 mole Yanshuella cf. primaeva¹ Schlosser 1924 mole Desmanodon sp.¹ Engesser 1980 mole Desmaninae indet.¹ Thomas 1912 mole
Theriamorpha - Plesiosoricidae	Plesiosorex sp.¹ Plesiosorex sp.¹ Pomel 1848 placental
Theriamorpha - Soricidae	Heterosorex sp.¹, Miosorex aff. grivensis¹, Miosorex cf. grivensis¹ Heterosorex sp.¹ Gaillard 1915 shrew Miosorex aff. grivensis¹ Depéret 1892 shrew Miosorex cf. grivensis¹ Depéret 1892 shrew
Theriamorpha - Erinaceidae	Parvericius cf. buk¹ Parvericius cf. buk¹ Ziegler et al. 2007 hedgehog

¹Voyta et al. 2022; ²Zelenkov et al. 2018