Ust-Baley Locality (PIN collection 1670) (Jurassic of Russian Federation)

Where: Irkutsk, Russian Federation (54.2° N, 100.3° E: paleocoordinates 61.8° N, 99.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ust' -Baleyskaya Member (Cheremkhovskaya Formation), Toarcian (182.7 - 174.1 Ma)

Environment/lithology: lacustrine - small; lithology not reported

• The Ust'-Baley palaeocenosis is a well-described Mesozoic "hypotrophic" lake (Zherikhin and Kalugina 1985), of type "B" according to Sinitshenkova and Zherikhin (1996). It was a small, shallow, permanent lake in a large river valley (but completely isolated from the river), with a low primary production and high oxygen concentration.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by G.P. Kolosintsyn in 1962; reposited in the PIN

• Collector interpreted from somewhat confusing parallel lists

Primary reference: A. P. Rasnitsyn. 1982. Triassic and Jurassic Insects of the genus Shurabia (Grylloblattida, Geinitziidae). Paleontological Journal 16(3):77-86 [M. Clapham/J. Karr/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122950: authorized by Matthew Clapham, entered by Jered Karr on 07.01.2012, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Naucoridae
Irkutonecta longiclavalis n. gen. n. sp.4
Irkutonecta longiclavalis n. gen. n. sp.4 Popov 1985 creeping water bug
PIN 1670/88
 Plecoptera - Baleyopterygidae
Baleyopteryx orthoclada7 Sinitshenkova 1985 stonefly
PIN 1670/362
 Plecoptera -
Perlisca aufuga7 Sinitshenkova 1985 stonefly
PIN 1670/416
 Dicondylia -
Orthoptera indet.9 Olivier 1789 grasshopper
PIN 1670/382
 Orthoptera - Prophalangopsidae
? Aboilus "sp. 2"9 Martynov 1925 hump-winged cricket
PIN 1670/393
 Orthoptera - Elcanidae
Archelcana ornata n. sp.9 Zherikhin 1985 grasshopper
PIN 1670/395
 Coleoptera - Permosynidae
Hydrobiites crassus n. sp.3 Ponomarenko 1985 beetle
PIN 1670/375
 Coleoptera -
Larvula cassa n. gen. n. sp.3
Larvula cassa n. gen. n. sp.3 Ponomarenko 1985 beetle
PIN 1670/86
 Coleoptera - Liadytidae
Liadytes major n. sp.3, Liadytes avus n. gen. n. sp.2
Liadytes major n. sp.3 Ponomarenko 1985 water scavenger beetle
PIN 1670/383
Liadytes avus n. gen. n. sp.2 Ponomarenko 1963 water scavenger beetle
PIN 1670/388
 Coleoptera -
Memptus redtenbacheri3 Handlirsch 1906 beetle
PIN 1670/382, 384
Memptus ganglbaueri3 Ponomarenko 1985 beetle
PIN 1670/376-379
Memptus handlirschi n. sp.3 Ponomarenko 1985 beetle
PIN 1670/381, 395
 Coleoptera - Dytiscidae
Angaragabus jurassicus n. gen. n. sp.2
Angaragabus jurassicus n. gen. n. sp.2 Ponomarenko 1963 predaceous diving beetle
PIN 1670/390
 Diptera - Ptychopteridae
Crenoptychoptera conspecta n. sp.1 Lukashevich 1995 phantom crane fly
PIN 1670/403, 400
 Reculida - Geinitziidae
Shurabia angustata Martynov 1937 winged insect
PIN 1670/414
 Ephemerida - Mesonetidae
Mesoneta antiqua8 Brauer et al. 1889 mayfly
PIN 1670/12, 41
Mesoneta utriculata6 Sinitshenkova 1985 mayfly
PIN 1670/4,6,20,29,32,48,52,65,72,83,84
 Ephemeroptera - Siphlonuridae
Mesobaetis allata6 Sinitshenkova 1985 mayfly
PIN 1670/11,15,25,28,30,37,45,61,66,81,278,328,412
Mesobaetis sibirica6 Brauer et al. 1889 mayfly
PIN 1670/7(10), 16, 42, 67, 71, 74, 97, 153
 Odonata - Campterophlebiidae
Karatawia sibirica n. sp.5 Pritykina 1985 dragonfly
PIN 1670/182