Kholtygey (PIN collection 1811) (Jurassic of Russian Federation)

Where: Buryatia, Russian Federation (51.8° N, 108.4° E: paleocoordinates 56.4° N, 108.8° 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: terrestrial; lithified siliciclastic sediments

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by G.A. Dmitriev in 1960; reposited in the PIN

Primary reference: O. A. Tshernova. 1969. New early Jurassic may-flies (Ephemeroptera, Epeoromimidae, Mesonetidae). Entomologicheskoe Obozrenie 48:153-161 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125230: authorized by Matthew Clapham, entered by Matthew Clapham on 07.03.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Ephemeroptera - Siphlonuridae
"Mesobaetis sibirica" = Mesobaetis sibirica, "Epeoromimus beybienkoi n. sp." = Mesobaetis sibirica
"Mesobaetis sibirica" = Mesobaetis sibirica Brauer et al. 1889 mayfly
PIN 1811/2,3,6,9,12,13
"Epeoromimus beybienkoi n. sp." = Mesobaetis sibirica Brauer et al. 1889 mayfly
PIN 1811/6(7), 1, 4(5), 8, 10(11), 15