Ichetuy-II (PIN collection 1981) (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 123194: authorized by Matthew Clapham, entered by Matthew Clapham on 13.01.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Plecoptera - Mesoleuctridae
Mesoleuctroides saturatus3 Sinitshenkova 1985 stonefly
PIN 1981/1-18,22(26),29-37
 Coleoptera - Coptoclavidae
Stygeonectes jurassicus Ponomarenko 1977 beetle
6 specimens in collections 1980, 1981, 1982 (undivided)
 Coleoptera - Trachypachidae
Dolichorabus longipes n. gen. n. sp.1
Dolichorabus longipes n. gen. n. sp.1 Ponomarenko 1985 false ground beetle
PIN 1981/22
 Mecoptera - Nannochoristidae
Dahurolarva gracilissima n. gen. n. sp.4
Dahurolarva gracilissima n. gen. n. sp.4 Sukatsheva 1985 scorpionfly
PIN 1981/23, 38
 Odonata -
? Dinosamarura sp.2 Pritykina 1985 damselfly
PIN 1981/42