PBDB Collection

Baissa (PIN collection 4210, layer 2) (Cretaceous of Russian Federation)

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

• Paleocoordinates: 50.9° N, 119.4° E (Wright 2013)

• 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.

Environment/lithology: lacustrine - large; lithified, carbonaceous 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 classes: macrofossils, mesofossils

Preservation: mold/impression

Reposited in the PIN

Primary reference: P. Wegierek. 1989. New species of Mesozoic aphids (Snaposhnikoviidae, Homoptera). Paleontological Journal 23(4):40-49 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125413: authorized by Matthew Clapham, entered by Matthew Clapham on 09.03.2012, edited by Jered Karr and Lindy Edwards

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Insecta
Alienoptera - Umenocoleidae	Vitisma rasnitsyni¹¹ Vitisma rasnitsyni¹¹ Vršanský 1999 winged insect PIN 4210/1271, 1272, 1301
Coleoptera - Scarabaeidae	Cretoscarabaeus lentiginosus n. sp.⁸ Cretoscarabaeus lentiginosus n. sp.⁸ Nikolajev 1995 scarab beetle PIN 4210/702
Diptera - Platypezidae	Proplatypeza amabilis n. sp.⁶ Proplatypeza amabilis n. sp.⁶ Mostovski 1995 flat-footed fly PIN 4210/3091, 3090
Diptera - Ironomyiidae	Hermaeomyia bisaetigera n. sp.⁷ Hermaeomyia bisaetigera n. sp.⁷ Mostovski 1995 ironic fly PIN 4210/3080
Diptera -	Baisepesthoneura mesozoica³ Baisepesthoneura mesozoica³ Blagoderov 1998 fungus gnat PIN 4210/2858
Diptera - Mycetophilidae	Paradzickia hurin², Palaecomoptera shcherbakovi², Palaecomoptera lukashevichae², Palaecomoptera longimedia², Drepanorzeckia extrunculipennis n. sp.², Drepanorzeckia setifemoralis n. sp.², Docosia baisae³, Prospeolepta trapezia¹, Ekhiritus disannuus¹ Paradzickia hurin² Blagoderov 1997 fungus gnat PIN 4210/2870 Palaecomoptera shcherbakovi² Blagoderov 1997 fungus gnat PIN 4210/2855 Palaecomoptera lukashevichae² Blagoderov 1997 fungus gnat PIN 4210/2871 Palaecomoptera longimedia² Blagoderov 1997 fungus gnat PIN 4210/2863 Drepanorzeckia extrunculipennis n. sp.² Blagoderov 1997 fungus gnat PIN 4210/2864 Drepanorzeckia setifemoralis n. sp.² Blagoderov 1997 fungus gnat PIN 4210/2861 Docosia baisae³ Blagoderov 1998 fungus gnat PIN 4210/2859 Prospeolepta trapezia¹ Blagoderov 1995 fungus gnat PIN 4210/2866 Ekhiritus disannuus¹ Blagoderov 1995 fungus gnat PIN 4210/2856
Hymenoptera - Sepulcidae	Micramphilius minutus n. gen. n. sp.⁹ Micramphilius minutus n. gen. n. sp.⁹ Rasnitsyn 1993 stem sawfly PIN 4210/1118, 1119
Hemiptera - Matsucoccidae	Eomatsucoccus sukachevae n. gen. n. sp.⁵ Eomatsucoccus sukachevae n. gen. n. sp.⁵ Koteja 1988 pine bark scales PIN 4210/1100, 1101
Hemiptera - Palaeoaphididae	Ellinaphidinae indet.⁴, Ellinaphis sp.⁴, Ellinaphis longistigma⁴, Ellinaphis cubocrassa n. sp.⁴, Ellinaphis sensoriata⁴, Ellinaphis curta n. sp.⁴, Ellinaphis incognita⁴, Ellinaphis eserta n. sp.⁴, Ellinaphis truncata⁴, Ellinaphis elegans n. sp.⁴, Unioaphis venusta⁴, Caudaphis sp.⁴, Caudaphis modica n. sp.⁴, Caudaphis angustivola⁴, Caudaphis brevicrura n. sp.⁴, Caudaphis vulgata⁴, Annulaphis rasnitsyni⁴, Annulaphis mostovskini⁴, Transbaikalis furcata⁴ Ellinaphidinae indet.⁴ Kania and Wegierek 2008 aphid PIN 4210/2520, 2553, 2557, 2558, 2559, 2560, 2566, 2567, 2570, 2573, 2583b, 2587, 2590a, 2590b, 2592, 2595, 2599, 2608, 2614, 4462a, 4462b Ellinaphis sp.⁴ Shaposhnikov 1979 aphid PIN 4210/2613, 2615 Ellinaphis longistigma⁴ Kania and Wegierek 2008 aphid PIN 4210/2620 Ellinaphis cubocrassa n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2551, 2562, 2576, 2577, 2593, 2598, 2600, 2606, 2609, 2611, 2612, 2616, 2618, 4363, 7558 Ellinaphis sensoriata⁴ Shaposhnikov 1979 aphid PIN 4210/2565, 2582, 2591, 2594 Ellinaphis curta n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2564, 2568, 2580, 2588, 7559 Ellinaphis incognita⁴ Shaposhnikov 1979 aphid PIN 4210/2556, 2578, 2604, 2607, 4389 Ellinaphis eserta n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2561 Ellinaphis truncata⁴ Kania and Wegierek 2008 aphid PIN 4210/2555, 2583a, 2619 Ellinaphis elegans n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2602 Unioaphis venusta⁴ Kania and Wegierek 2008 aphid PIN 4210/2579 Caudaphis sp.⁴ Zhang et al. 1989 aphid PIN 4210/2581, 2603, 2610a, 2610b, 2617, 4472, 4481, 7561 Caudaphis modica n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2563, 2585 Caudaphis angustivola⁴ Kania and Wegierek 2008 aphid PIN 4210/2552, 2574, 2575, 2589, 2596, 2601, 2621 Caudaphis brevicrura n. sp.⁴ Kania and Wegierek 2008 aphid PIN 4210/2572, 2584 Caudaphis vulgata⁴ Kania and Wegierek 2008 aphid PIN 4210/2528, 2569 Annulaphis rasnitsyni⁴ Shaposhnikov 1979 aphid PIN 4210/2597 Annulaphis mostovskini⁴ Kania and Wegierek 2008 aphid PIN 4210/2605 Transbaikalis furcata⁴ Kania and Wegierek 2008 aphid PIN 4210/2554
Hemiptera - Szelegiewicziidae	Xenoaphis viticulata n. gen. n. sp. Xenoaphis viticulata n. gen. n. sp. Wegierek 1989 aphid PIN 4210/2539
Hemiptera - Mimarachnidae	Mimarachne mikhailovi¹⁰ Mimarachne mikhailovi¹⁰ Shcherbakov 2007 planthopper PIn 4210/1086

¹Blagoderov 1995; ²Blagoderov 1997; ³Blagoderov 1998; ⁴Kania and Wegierek 2008; ⁵Koteja 1988; ⁶Mostovski 1995; ⁷Mostovski 1995; ⁸Nikolajev 1995; ⁹Rasnitsyn 1993; ¹⁰Shcherbakov 2007; ¹¹Vršanský 1999