Baissa (PIN collection 4210, layer 4): Aptian, Russian Federation
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta
- Coleoptera
- Hybosoridae
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Cretanaides trogopterus n. gen., n. sp.
Nikolajev 1996
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Nikolajev 1996 | 1 specimen | ||||||||
PIN 4210/706 (1 measurement) | ||||||||||
Insecta
- Hymenoptera
- Ichneumonidae
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Palaeoichneumon micron n. sp.
Kopylov 2009
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1 specimen | |||||||||
PIN 4210/1147 (1 measurement) | ||||||||||
Palaeoichneumon freja n. gen., n. sp.
Kopylov 2009
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1 specimen | |||||||||
PIN 4210/1146 (2 measurements) | ||||||||||
Insecta
- Hemiptera
- Oviparosiphidae
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Oviparosiphum baissensis n. sp.
Shaposhnikov and Wegierek 1989
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Shaposhnikov and Wegierek 1989 | 3 specimens | ||||||||
PIN 4210/2623 (some paratypes could from from PIN 3064) (1 measurement) | ||||||||||
Insecta
- Hemiptera
- Szelegiewicziidae
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Brimaphis certa n. gen., n. sp.
Wegierek 1989
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Wegierek 1989 | 1 specimen | ||||||||
PIN 4210/2628 (1 measurement) | ||||||||||
Insecta
- Hemiptera
- Palaeoaphididae
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Ellinaphidinae indet.
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 2 specimens | ||||||||
PIN 4210/2654, 2655 | ||||||||||
Ellinaphis sp.
Shaposhnikov 1979
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Kania and Wegierek 2008 | 1 specimen | ||||||||
PIN 4210/2650 | ||||||||||
Ellinaphis mirabila
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 2 specimens | ||||||||
PIN 4210/2658, 2653 | ||||||||||
Ellinaphis longistigma n. sp.
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 1 specimen | ||||||||
PIN 4210/2647 (2 measurements) | ||||||||||
Caudaphis sp.
Zhang et al. 1989
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Kania and Wegierek 2008 | 1 specimen | ||||||||
PIN 4210/2626 | ||||||||||
Caudaphis longiantennata
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 1 specimen | ||||||||
PIN 4210/2657 | ||||||||||
Caudaphis brevicrura
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 1 specimen | ||||||||
PIN 4210/2649 | ||||||||||
Caudaphis angustivola
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 2 specimens | ||||||||
PIN 4210/2656, 2652 | ||||||||||
Buriataphis soporata n. sp.
Kania and Wegierek 2008
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Kania and Wegierek 2008 | 2 specimens | ||||||||
PIN 4210/2651, 2648 (2 measurements) | ||||||||||
Insecta
- Thysanoptera
- Aeolothripidae
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Fusithrips n. gen. crassipes
Shmakov 2009
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Shmakov 2009 | 4 specimens | ||||||||
PIN 4210/2260,2269,2331,5455 | ||||||||||
Insecta
- Thysanoptera
- Thripidae
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Convexithrips robustus n. gen., n. sp.
Shmakov 2009
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Shmakov 2009 | 4 specimens | ||||||||
PIN 4210/2268,2273,2317,5449 (2 measurements) | ||||||||||
see common names |
Geography
Country: | Russian Federation | State/province: | Buryatia |
Coordinates: | 53.3° North, 112.1° East (view map) | ||
Paleocoordinates: | 56.0° North, 108.5° East | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Early Cretaceous |
Stage: | Aptian | 10 m.y. bin: | Cretaceous 3 |
Key time interval: | Aptian | ||
Age range of interval: | 121.4 - 113 m.y. ago |
Stratigraphy
Formation: | Zaza | ||||
Stratigraphy comments: 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. |
Lithology and environment
Primary lithology: | lithified siltstone | ||
Secondary lithology: | lithified marl | ||
Environment: | lacustrine - large | Tectonic setting: | rift |
Geology comments: "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 |
Taphonomy
Modes of preservation: | mold/impression |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Collection methods: | survey of museum collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | PIN |
Metadata
Database number: | 113354 | ||
Authorizer: | M. Clapham | Enterer: | M. Clapham, J. Karr |
Modifier: | M. Clapham | Research group: | paleoentomology |
Created: | 2011-07-28 14:17:37 | Last modified: | 2014-08-05 22:42:19 |
Access level: | the public | Released: | 2011-07-28 14:17:37 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
36791. | D. S. Kopylov. 2009. A new subfamily of Ichneumonids from the Lower Cretaceous of Transbaikalia and Mongolia (Insecta: Hymenoptera: Ichneumonidae). Paleontological Journal 43(1):83-93 [M. Clapham/M. Clapham] |
Secondary references:
48084 | I. Kania and P. Wegierek. 2008. Palaeoaphididae (Hemiptera, Sternorrhyncha) from Lower Cretaceous Baissa deposits: Morphology and classification. Monografie faunistyczne 25:1-135 [M. Clapham/J. Karr] | |
40858 | G. V. Nikolajev. 1996. Lamellicorn beetle species (Coleoptera, Scarabaeidae) with multistriate elytra from the Lower Cretaceous Baisa locality, Transbaikalia. Paleontological Journal 30:217-224 [M. Clapham/M. Clapham] | |
40721 | G. K. Shaposhnikov and P. Wegierek. 1989. New late Mesozoic aphids (Oviparosiphidae, Homoptera). Paleontological Journal 23(3):37-47 [M. Clapham/M. Clapham] | |
36856 | A. S. Shmakov. 2009. The oldest members of the families Aeolothripidae and Thripidae (Insecta: Thysanoptera) from the Lower Cretaceous of Transbaikalia. Paleontological Journal 43(4):428-432 [M. Clapham/M. Clapham] | |
40723 | P. Wegierek. 1989. New species of Mesozoic aphids (Snaposhnikoviidae, Homoptera). Paleontological Journal 23(4):40-49 [M. Clapham/M. Clapham] |