Baissa (PIN collection 4210, layer 31) (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.

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 classes: macrofossils, mesofossils

Preservation: mold/impression

Reposited in the PIN

Primary reference: V. G. Gratshev and A. A. Legalov. 2011. New Mesozoic Ithyceridae beetles (Coleoptera). Paleontological Journal 45:77-82 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106103: authorized by Matthew Clapham, entered by Matthew Clapham on 02.03.2011, edited by Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Diptera - Mycetophilidae
Docosia baisae n. sp.3 Blagoderov 1998 fungus gnat
PIN 4210/2967
Docosia zaza n. sp.3 Blagoderov 1998 fungus gnat
PIN 4210/2963
Zazicia innuba2 Blagoderov 1995 fungus gnat
PIN 4210/2961
 Diptera -
Baisepesthoneura mesozoica n. gen. n. sp.3 Blagoderov 1998 fungus gnat
PIN 4210/2860
 Diptera - Platypezidae
Parnasos pessimus n. sp.9 Mostovski 1995 flat-footed fly
PIN 4210/3099
 Diptera - Ironomyiidae
"Hermaeomyia armata n. sp." = Palaeopetia armata8
"Hermaeomyia armata n. sp." = Palaeopetia armata8 Mostovski 1995 ironic fly
PIN 4210/3088
 Diptera - Nemestrinidae
Hirmoneura (? Hirmoneura) elenae n. sp.12 Mostovski and Martínez-Delclòs 2000 tangle-veined fly
PIN 4210/6381
 Diptera - Rhagionidae
Ptiolinites oudatchinae n. sp.11 Mostovski et al. 2000 snipe fly
PIN 4210/5216
 Diptera -
"Athericites zazicola n. sp." = Palaepangonius zazicola10
"Athericites zazicola n. sp." = Palaepangonius zazicola10 Mostovski et al. 2003 fly
PIN 4210/5215
 Hemiptera - Hoploridiidae
Hoploridium dollingi18 Popov and Shcherbakov 1991 true bug
PIN 4210/1097
 Hemiptera - Oviparosiphidae
Acanthotrichaphis paulisensoriata n. gen. n. sp.20 Shaposhnikov and Wegierek 1989 aphid
PIN 4210/2808
"Oviparosiphum baissensis" = Archeoviparosiphum baissense20 Shaposhnikov and Wegierek 1989 aphid
Some or all could be from PIN 3064
Dinaphis multisensoriata20 Shaposhnikov and Wegierek 1989 aphid
PIN 4210/2800
 Hemiptera - Palaeoaphididae
Ellinaphidinae indet.4 Kania and Wegierek 2008 aphid
PIN 4210/7587, 7588, 2813, 2815, 2821a, 2821b, 2824, 2825, 2827, 5570, 5572, 5594, 5615, 5655
Rallotopaphis antennata4 Kania and Wegierek 2008 aphid
PIN 4210/2810
Ellinaphis sp.4 Shaposhnikov 1979 aphid
PIN 4210/2819, 2826
Ellinaphis eserta4 Kania and Wegierek 2008 aphid
PIN 4210/5635
Ellinaphis cubocrassa4 Kania and Wegierek 2008 aphid
PIN 4210/5662, 7579, 6898, 2820, 5581
Ellinaphis bulla4 Kania and Wegierek 2008 aphid
PIN 4210/6895
Ellinaphis curta4 Kania and Wegierek 2008 aphid
PIN 4210/5652
Ellinaphis incognita4 Shaposhnikov 1979 aphid
PIN 4210/6909, 2812, 5657
Ellinaphis longistigma4 Kania and Wegierek 2008 aphid
PIN 4210/6901, 5650
Ellinaphis mirabila4 Kania and Wegierek 2008 aphid
PIN 4210/5564
Ellinaphis truncata n. sp.4 Kania and Wegierek 2008 aphid
PIN 4210/2828, 5636
Ellinaphis premordica n. sp.4 Kania and Wegierek 2008 aphid
PIN 4210/2818
Ellinaphis extenda4 Kania and Wegierek 2008 aphid
PIN 4210/7578, 6907, 5632
Caudaphis sp.4 Zhang et al. 1989 aphid
PIN 4210/2814, 2822
Caudaphis vulgata4 Kania and Wegierek 2008 aphid
PIN 4210/6913, 2811, 5660
Caudaphis modica4 Kania and Wegierek 2008 aphid
PIN 4210/2823, 5558
Caudaphis angustivola4 Kania and Wegierek 2008 aphid
PIN 4210/6891, 5670, 2816
Caudaphis brevicrura4 Kania and Wegierek 2008 aphid
PIN 4210/2817
Caudaphis longiantennata4 Kania and Wegierek 2008 aphid
PIN 4210/5666
Annulaphis mostovskini4 Kania and Wegierek 2008 aphid
PIN 4210/5554
 Alienoptera - Umenocoleidae
Vitisma rasnitsyni21 Vršanský 1999 winged insect
PIN 4210/1502, 5076, 5136, 5168, 5179
 Hymenoptera - Braconidae
Archobraconus pallidus n. sp.19 Rasnitsyn and Sharkey 1988 wasp
PIN 4210/1157
 Hymenoptera - Ichneumonidae
Megachora sibirica n. gen. n. sp.6, Rudimentifera suspecta n. sp.5
Megachora sibirica n. gen. n. sp.6 Kopylov 2010 ichneumon wasp
PIN 4210/5248
Rudimentifera suspecta n. sp.5 Kopylov 2009 ichneumon wasp
PIN 4210/1154
 Neuroptera - Osmylidae
Kempynosmylus zherikhini n. gen. n. sp.7
Kempynosmylus zherikhini n. gen. n. sp.7 Makarkin 2014 lance lacewing
PIN 4210/5274
 Coleoptera - Carabidae
"Holcorobeus (Holcorobeus) maculatus n. sp." = Antemnacrassa maculata13
"Holcorobeus (Holcorobeus) maculatus n. sp." = Antemnacrassa maculata13 Nikolajev 1992 ground beetle
PIN 4210/711; 715, 7172 in Nikolajev, 2004
 Coleoptera - Glaresidae
Cretoglaresis nana n. gen. n. sp.16
Cretoglaresis nana n. gen. n. sp.16 Nikolajev 2007 enigmatic scarab beetle
PIN 4210/5462
 Coleoptera - Hybosoridae
Cretohybosorus striatulus n. sp.15 Nikolajev 1999 scavenger scarab beetle
PIN 4210/710
 Coleoptera - Geotrupidae
Lithogeotrupes confusus n. gen. n. sp.17
Lithogeotrupes confusus n. gen. n. sp.17 Nikolajev 2008 earth-boring dung beetle
PIN 4210/7267, 6035
 Coleoptera -
"Holcorobeus (Holcorobeus) nigrovittatus n. sp." = Holcorobeus nigrovittatus13
"Holcorobeus (Holcorobeus) nigrovittatus n. sp." = Holcorobeus nigrovittatus13 Nikolajev 1992 scarab beetle
PIN 4210/712
 Coleoptera - Scarabaeidae
Cretomelolontha transbaikalica14 Nikolajev 1998 scarab beetle
PIN 4210/713
Cretoserica latitibialis n. gen. n. sp.14 Nikolajev 1998 scarab beetle
PIN 4210/714
 Coleoptera - Brentidae
Baissacar passarius n. gen. n. sp.
Baissacar passarius n. gen. n. sp. Gratshev and Legalov 2011 weevil
PIN 4210/726
 Coleoptera - Elateridae
Cryptocoelus dolini n. sp.1 Alexeev 2011 click beetle
PIN 4210/6420
Cryptocoelus shcherbakovi n. sp.1 Alexeev 2011 click beetle
PIN 4210/6417