Ust-Baley Locality (PIN collection 2375) (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 B.M. Skoblo in 1981; reposited in the PIN

• Collector interpreted from somewhat confusing parallel lists

Primary reference: N. D. Sinitshenkova. 1985. Jurskie podenki (Ephemerida-Ephemeroptera) yuzhnoy Sibiri i zapadnoy Mongolii. In A. P. Rasnitsyn (ed.), Jurskie Nasekomye Sibiri i Mongolii 11-23 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125228: authorized by Matthew Clapham, entered by Matthew Clapham on 07.03.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Blattaria - Caloblattinidae
Sogdoblatta baleica n. sp.4 Vishnyakova 1985 cockroach
PIN 2375/198
 Plecoptera -
Perlisca aufuga n. gen. n. sp.3
Perlisca aufuga n. gen. n. sp.3 Sinitshenkova 1985 stonefly
PIN 2375/66
 Blattodea - Mesoblattinidae
Mesoblattinidae indet.4 Handlirsch 1906 cockroach
PIN 2375/199
 Dicondylia -
Orthoptera indet.5 Olivier 1789 grasshopper
PIN 2375/201 (or Haglidae indet.)
 Coleoptera -
Angarolarva aquatica1 Ponomarenko 1985 beetle
PIN 2375/212
Memptus redtenbacheri1 Handlirsch 1906 beetle
PIN 2375/202
 Ephemerida - Mesonetidae
Mesoneta utriculata n. sp. Sinitshenkova 1985 mayfly
PIN 2375/64,65
 Ephemeroptera - Siphlonuridae
Mesobaetis allata n. sp. Sinitshenkova 1985 mayfly
PIN 2375/56-60, 209
Mesobaetis sibirica Brauer et al. 1889 mayfly
PIN 2375/61-63, 208
 Odonata - Campterophlebiidae
Sibirioneura angarica n. sp.2 Pritykina 1985 dragonfly
PIN 2375/16
Karatawia sibirica2 Pritykina 1985 dragonfly
PIN 2375/26
Xanthohypsa sibirica n. sp.2 Pritykina 1985 dragonfly
PIN 2375/25