Madygen, PIN collection 2905, Madygen (SW area) (Triassic of Kyrgyzstan)

Where: Osh, Kyrgyzstan (40.0° N, 70.3° E)

• Paleocoordinates: 38.4° N, 80.0° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Madygen Formation, Ladinian (242.0 - 237.0 Ma)

• Aristov (2020): The age of the Madygen locality is usually reported as the Ladinian or Carnian of the Middle or Upper Triassic (Shcherbakov, 2008). This concept emerged, because I.A. Dobruskina (1995) did not discriminate between Ladinian and Carnian floras. Our data show that only three of the six families found at Madygen are known from younger sediments (Fig. 1), and therefore we can confirm the assumption of the Ladinian age of the Madygen locality (A.G. Ponomarenko, personal communication, 2018).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified siliciclastic sediments

• Oxbow lake. Madygen basin; tectonically-induced intermontane basin. Complex facies pattern consistent with active tectonics in upland region.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

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 123145: authorized by Matthew Clapham, entered by Matthew Clapham on 12.01.2012

Creative Commons license: CC0 (CC0)

Taxonomic list

Insecta
 Mecoptera - Parachoristidae
Kirgizichorista larvata n. gen. n. sp.2
Kirgizichorista larvata n. gen. n. sp.2 Novokshonov 2001 scorpionfly
PIN 2905/37
 Coleoptera - Triaplidae
Triaplidae indet.1 Ponomarenko 1977 beetle
PIN 2905/24