PBDB Collection

Baissa (PIN collection 1668) (Cretaceous of Russian Federation)

Where: Buryatia, Russian Federation (53.3° N, 112.1° E: paleocoordinates 56.0° N, 108.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Zaza Formation, Aptian (125.0 - 113.0 Ma)

• C. longipoda, E. trisetalis and Lycoptera all occur in the Zaza Formation indicating that this formation could be correlated with the upper Yixian Formation and the lower Jiufotang Formation in western Liaoning, which have a duration of 122.5-120 Ma. So it is possible to assign the Zaza Formation to an Aptian age. Also correlated with Barremian-Aptian based on plants and pollen.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified siltstone and lithified marl

• "The water body is reconstructed as an intermontane lake with the depth of 20 - 30 meters (LYAMINA 1980) situated within a granite massif. The presence of thick layers of the bituminous shales shows that the lake was meromictic, with the oxygen deficiency and high hydrogen sulphur level in the hypolimnion. However, the oxygenated epilimnion should be thick, with a lower boundary well beneath the limit of episodic wave action because no suffocation events are documented. The abundance of caddisflies, dobsonfly larvae and other groups intolerant to oxygen deficiency shows that in more shallow areas the water was clear and well-oxygenated even near the bottom. The lake ecosystem was highly productive as indicated by its complex trophic structure (Fig. 2) with several levels of predators up to the large sturgeon-like fish Stychopterus as well as by the extremely high abundance of planetonivorous phantom midges (SINICHENKOVA & ZHERIKHIN 1996)." ZHERIKHIN et al., 1999

Size class: macrofossils

Preservation: mold/impression

Primary reference: A. G. Sharov. 1968. Filogeniya ortopteroidnykh nasekomykh. Trudy Paleontologicheskogo Instituta Akademii Nauk SSSR 118:1-216 [C. Beard/C. Beard/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113403: authorized by Matthew Clapham, entered by Jered Karr on 30.07.2011, edited by Lindy Edwards and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Insecta
Neuroptera - Nymphidae	Mesonymphes apicalis n. sp.⁸ Mesonymphes apicalis n. sp.⁸ Ponomarenko 1992 split-footed lacewing PIN 1668/1848
Raphidioptera - Baissopteridae	Baissoptera sp.⁴ Baissoptera sp.⁴ Martynova 1961 snakefly PIN 1668/1850
Coleoptera - Pleocomidae	Proteroscarabaeus yeni¹ Proteroscarabaeus yeni¹ Grabau 1923 rain beetle PIN 1668/1797
Coleoptera - Scarabaeidae	"Proteroscarabaeus baissensis n. sp." = Lithoscarabaeus baissensis¹ "Proteroscarabaeus baissensis n. sp." = Lithoscarabaeus baissensis¹ Nikritin 1977 scarab beetle PIN 1668/1761, 1830
Coleoptera - Trogidae	Avitortor leptoscelis⁵ Avitortor leptoscelis⁵ Nikritin 1977 hide beetle PIN 1668/1801 (paratype of Geotrupoides sulcatus Nikritin)
Coleoptera -	Holcorobeus vittatus¹ Holcorobeus vittatus¹ Nikritin 1977 scarab beetle PIN 1668/1809
Coleoptera - Caridae	Cretonanophyes longirostris n. gen. n. sp.¹ Cretonanophyes longirostris n. gen. n. sp.¹ Zherikhin 1977 weevil PIN 1668/1772
Coleoptera - Carabidae	Conjunctia prodroma n. gen. n. sp.¹, "Geotrupoides sulcatus n. sp." = Antemnacrassa sulcata¹, Antemnacrassa nebulosa n. sp.⁶, "Geotrupoides vitimensis n. sp." = Antemnacrassa vitimensis¹ Conjunctia prodroma n. gen. n. sp.¹ Ponomarenko 1977 ground beetle PIN 1668/1763 "Geotrupoides sulcatus n. sp." = Antemnacrassa sulcata¹ Nikritin 1977 ground beetle PIN 1688/1785 (not 1801 = Avitortor leptoscelis) Antemnacrassa nebulosa n. sp.⁶ Nikolajev 2004 ground beetle PIN 1668/1809 "Geotrupoides vitimensis n. sp." = Antemnacrassa vitimensis¹ Nikritin 1977 ground beetle PIN 1668/1805
Coleoptera - Gyrinidae	Baissogyrus savilovi n. gen. n. sp.⁷ Baissogyrus savilovi n. gen. n. sp.⁷ Ponomarenko 1973 whirligig beetle PIN 1668/1787
Mecoptera - Aneuretopsychidae	Aneuretopsyche vitimensis n. sp.¹³ Aneuretopsyche vitimensis n. sp.¹³ Rasnitsyn and Kozlov 1990 scorpionfly PIN 1668/1958
Hymenoptera - Angarosphecidae	Baissodes robustus n. gen. n. sp.¹² Baissodes robustus n. gen. n. sp.¹² Rasnitsyn 1975 apoid wasp PIN 1668/2239
Hymenoptera -	Oryctopterus dubius n. gen. n. sp.¹² Oryctopterus dubius n. gen. n. sp.¹² Rasnitsyn 1975 wasp PIN 1668/2344
Hymenoptera - Ichneumonomimidae	Ichneumonomima paradoxa n. gen. n. sp.¹² Ichneumonomima paradoxa n. gen. n. sp.¹² Rasnitsyn 1975 wasp PIN 1668/2342
Hymenoptera - Xyelidae	Baissoxyela tarsalis n. gen. n. sp.¹¹, Chaetoxyela hirsuta n. gen. n. sp.¹⁰ Baissoxyela tarsalis n. gen. n. sp.¹¹ Rasnitsyn 1969 sawfly PIN 1668/1819 Chaetoxyela hirsuta n. gen. n. sp.¹⁰ Rasnitsyn 1966 sawfly PIN 1668/2340
Hemiptera - Bajsaphididae	Bajsaphis pulchra n. sp.² Bajsaphis pulchra n. sp.² Homan et al. 2015 aphid PIN 1668/1689(2307)
Hemiptera - Naucoridae	Angaronecta longirostris n. gen. n. sp.⁹ Angaronecta longirostris n. gen. n. sp.⁹ Popov 1971 creeping water bug PIN 1668/1742
Hemiptera - Hylicellidae	Vietocycla peregrina¹⁴ Vietocycla peregrina¹⁴ Shcherbakov 1988 true bug PIN 1668/1670
Orthoptera - Elcanidae	"Baisselcana sibirica n. gen. n. sp." = Panorpidium sibirica "Baisselcana sibirica n. gen. n. sp." = Panorpidium sibirica Sharov 1968 grasshopper PIN 1668/1651
Orthoptera - Vitimiidae	Vitimia evoluta n. gen. n. sp. Vitimia evoluta n. gen. n. sp. Sharov 1968 grasshopper PIN 1668/1654
Orthoptera - Tetrigidae	Archaeotetrix locustopseiformis n. gen. n. sp., Prototetrix reductus n. gen. n. sp. Archaeotetrix locustopseiformis n. gen. n. sp. Sharov 1968 pygmy grasshopper PIN 1668/1667 Prototetrix reductus n. gen. n. sp. Sharov 1968 pygmy grasshopper PIN 1668/1665
Dicondylia - Baissomantidae	Baissomantis picta¹⁷ Baissomantis picta¹⁷ Gratshev and Zherikhin 1993 winged insect PIN 1668/1645
Ephemeroptera - Hexagenitidae	Ephemeropsis martynovae n. sp.¹⁵, Ephemeropsis trisetalis¹⁶ Ephemeropsis martynovae n. sp.¹⁵ Tshernova 1961 mayfly PIN 1668/862 Ephemeropsis trisetalis¹⁶ Eichwald 1864 mayfly PIN 1668/1, 152
Diptera - Trichoceridae	Karatina explorans n. sp.³, Trichocera sp.³ Karatina explorans n. sp.³ Krzemińska et al. 2009 winter crane fly PIN 1668/2176 Trichocera sp.³ Meigen 1803 winter crane fly PIN 1668/2193

¹Arnoldi et al. 1977; ²Homan et al. 2015; ³Krzemińska et al. 2009; ⁴Martynova 1961; ⁵Nikolajev 1992; ⁶Nikolajev 2004; ⁷Ponomarenko 1973; ⁸Ponomarenko 1992; ⁹Popov 1971; ¹⁰Rasnitsyn 1966; ¹¹Rasnitsyn 1969; ¹²Rasnitsyn 1975; ¹³Rasnitsyn and Kozlov 1990; ¹⁴Shcherbakov 1988; ¹⁵Tshernova 1961; ¹⁶Tshernova and Sinitshenkova 1974; ¹⁷Vršanský 2002