''Angarogyrus'' is an extinct genus of

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...

beetle Beetles are insects that form the Taxonomic rank, order Coleoptera (), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 40 ...

s in the family

Gyrinidae The whirligig beetles are water beetles, comprising the family Gyrinidae, that usually swim on the surface of the water if undisturbed, though they swim underwater when threatened. They get their common name from their habit of swimming rapidly ...

, containing the following species:Gyrinidae Species List
at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 9 May 2012. * '' Angarogyrus minimus'' Ponomarenko, 1977

Cheremkhovskaya Formation Cheremkhovsky District () is an administrative district, one of the thirty-three in Irkutsk Oblast, Russia.Charter of Irkutsk Oblast, Article 13 Municipally, it is incorporated as Cheremkhovsky Municipal District.Law #95-oz It is located in ...

, Russia, Early Jurassic (

Toarcian The Toarcian is, in the International Commission on Stratigraphy, ICS' geologic timescale, an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic. It spans the time between 184.2 Megaannum, Ma (million ...

) * '' Angarogyrus mongolicus'' Ponomarenko, 1986 Gurvan-Eren Formation, Mongolia, Early Cretaceous (

Aptian The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...

)

References

Gyrinidae Fossil taxa described in 1977 Adephaga genera Fossil beetle genera {{paleo-beetle-stub