Ichetuy-II (PIN collection 1982) (Jurassic of Russian Federation)

Also known as Ichetui

Where: Buryatia, Russian Federation (50.6° N, 105.4° E: paleocoordinates 54.8° N, 106.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ichetuy Formation, Oxfordian (163.5 - 157.3 Ma)

• Insect workers often assign a late Early Jurassic-early Middle Jurassic (or Toarcian-Aalenian) age but radiometric dating of Ichituy Fm volcanics gives ages of 159-156 Ma.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified siliciclastic sediments

• Transbaikal rift.

Size class: macrofossils

Preservation: mold/impression, adpression

Reposited in the PIN

Primary reference: L. V. Arnoldi, V. V. Zherikhin, L. M. Nikritin and A. G. Ponomarenko. 1977. Mezozoiskie zhestkokryiye. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 161:1-204 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123195: authorized by Matthew Clapham, entered by Matthew Clapham on 13.01.2012, edited by Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

 Plecoptera - Mesoleuctridae
Mesoleuctroides saturatus4 Sinitshenkova 1985 stonefly
PIN 1982/2-5,7,8,13-28
 Hymenoptera - Xyelidae
Liadoxyela buriatica n. sp.2 Rasnitsyn 1983 sawfly
PIN 1982/38
 Coleoptera - Coptoclavidae
Stygeonectes jurassicus Ponomarenko 1977 beetle
6 specimens in collections 1980, 1981, 1982 (undivided)
 Diptera - Chaoboridae
Hypsocorethra jurassica n. sp.1 Kalugina 1985 phantom midge
PIN 1982/37, 29-36
 Ephemeroptera - Siphlonuridae
Mesobaetis sibirica3 Brauer et al. 1889 mayfly
PIN 1982/1, 10 (imago)