Gyrbykan River, outcrop 4 (PIN collection 4409) (Cretaceous to of Russian Federation)

Where: Khabarovsk, Russian Federation (59.4° N, 141.3° E: paleocoordinates 65.5° N, 126.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Gyrbykan Member (Amkin Formation), Coniacian to Coniacian (89.8 - 83.6 Ma)

• Traditionally placed between Arman flora (now dated as Turonian) and Arkagala Flora (now dated as Campanian). All radiometric dates from "Albian-Cenomanian" part of succession are actually Turonian-Campanian (Hourigan & Akinin, 2004; Akinin, 2007).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified, tuffaceous mudstone

• Intra-arc basin

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected in 1987; reposited in the PIN

Primary reference: V. V. Gromov, V. Y. Dmitriev, V. V. Zherikhin, E. L. Lebedev, A. G. Ponomarenko, A. P. Rasnitsyn, and I. D. Sukacheva. 1993. Melovye entomofauny basseyna r. Ul'i (zapadnoe Priokhot'e). In A. G. Ponomarenko (ed.), Mezozoyskie Nasekomye i Ostrakody Azii 5-60 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138045: authorized by Matthew Clapham, entered by Matthew Clapham on 04.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Coleoptera - Brentidae
Gyrbykana curvipes n. gen. n. sp.
Gyrbykana curvipes n. gen. n. sp. Zherikhin 1993 weevil
PIN 4409/1