PBDB Collection

Baissa (PIN collection 3064, bed 2) (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 marl and lithified, carbonaceous siltstone

• "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

Reposited in the PIN

Primary reference: G. K. Shaposhnikov and P. Wegierek. 1989. New late Mesozoic aphids (Oviparosiphidae, Homoptera). Paleontological Journal 23(3):37-47 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125412: authorized by Matthew Clapham, entered by Matthew Clapham on 09.03.2012, edited by Lindy Edwards and Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Insecta
Dicondylia - Susumaniidae	"Phasmomimoides ornatus" = Eosusumania ornata⁴ "Phasmomimoides ornatus" = Eosusumania ornata⁴ Kuzmina 1985 winged insect PIN 3064/8300, 8301
Mantodea -	Vitimophotina corrugata² Vitimophotina corrugata² Gratshev and Zherikhin 1993 mantis PIN 3064/419
Alienoptera - Umenocoleidae	Vitisma rasnitsyni⁶ Vitisma rasnitsyni⁶ Vršanský 1999 winged insect PIN 3064/3375
Hemiptera - Oviparosiphidae	"Oviparosiphum baissensis" = Archeoviparosiphum baissense, Vitimaphis rasnitsyni n. gen. n. sp. "Oviparosiphum baissensis" = Archeoviparosiphum baissense Shaposhnikov and Wegierek 1989 aphid PIN 3064/2316, 2213 (assumed to be from bed 2) Vitimaphis rasnitsyni n. gen. n. sp. Shaposhnikov and Wegierek 1989 aphid PIN 3064/2235
Hemiptera - Palaeoaphididae	Ellinaphidinae indet.³, Caudaphis longiantennata³, Caudaphis vulgata³, Ellinaphis sp.³, Ellinaphis longistigma³, Ellinaphis bulla n. sp.³, Ellinaphis cubocrassa³ Ellinaphidinae indet.³ Kania and Wegierek 2008 aphid PIN 3064/3984 Caudaphis longiantennata³ Kania and Wegierek 2008 aphid PIN 3064/2233, 4006 Caudaphis vulgata³ Kania and Wegierek 2008 aphid PIN 3064/2231, 3987 Ellinaphis sp.³ Shaposhnikov 1979 aphid PIN 3064/3976, 3986 Ellinaphis longistigma³ Kania and Wegierek 2008 aphid PIN 3064/3982 Ellinaphis bulla n. sp.³ Kania and Wegierek 2008 aphid PIN 3064/3980 Ellinaphis cubocrassa³ Kania and Wegierek 2008 aphid PIN 3064/1899, 2232, 3983, 4009
Hemiptera - Mimarachnidae	Mimarachne mikhailovi⁵ Mimarachne mikhailovi⁵ Shcherbakov 2007 planthopper PIN 3064/4018
Coleoptera - Buprestidae	Metabuprestium vitimense n. sp.¹ Metabuprestium vitimense n. sp.¹ Alexeev 1996 jewel beetle PIN 3064/7129

¹Alexeev 1996; ²Gratshev and Zherikhin 1993; ³Kania and Wegierek 2008; ⁴Kuzmina 1985; ⁵Shcherbakov 2007; ⁶Vršanský 1999