Argun Formation

The Argun Formation is the name of geological formation, formed in Crimea and Chita, Russia. It formed in early Cretaceus, appeared around 125.45 - 122.46 Ma, and ended in Miocene, ~23.03 - 15.97 Ma. Its lithology is characterized as shale in Crimea and siliclastic in Pad Semen (near Chita).

Fossil content

The formation contains mainly remains of fossil insects, mainly beetles:

• Archeraphidia baisensis
• Acmaeoderimorpha emersa
• Antemnacrassa geminata
• Brochocoleus minor
• Cacopsylla agellialta
• C. lapidea
• C. popovi
• C. taurica
• Cretohexura coylei
• Cretobestiola communis
• Cretothyrea optanda
• Cretoglaphyrus olenguicus
• C. zherikhini
• C. calvescens
• C. leptopterus
• C. transbaikalicus
• Cretolucanus longus
• C. ordinarius
• C. sibericus
• Cionocoleus sibiricus
• Dolichoderus tavridus
• D. taurica
• D. tauricus
• Lithoscarabaeus baissensis
• Metabuprestium cuneomaculatum
• Myangadina tetrops
• Prototrox transbaikalicus
• Priacma striata
• Prosusumania semenica
• Proteroscarbaeus yeni
• Pamparaphilius semen
• Trematothorax ingodensis
• Zygadenia semen
• Z. sibirica
• Z. sinitzae
• Irenichthys sp.
• Archostemata indet.
• Cupedidae indet.
• Prototroginae indet.

See also

• Argun terrane

References