Green River Formation Beetle

[ptera]

Small longhorn beetle (Cerambycidae) from green river formation Utah. Can anyone help me identify it further? Thanks.

 

 

 

 

[Crusty_Crab]

The vast majority of insects described from the Green River Formation were done by Samuel Scudder, summarized in:

The Tertiary Insects of North America, 1890,

Tertiary Rhychophorous Coleoptera of the United States, 1893, and 

Adephagous and clavicorn Coleoptera from the Tertiary deposits at Florissant, Colorado, with descriptions of a few other forms and a systematic list of the nonrhynchophorous Tertiary Coleoptera of North America, 1900.

Following Scudder, TDA Cockerell also published several descriptions in numerous articles. The EDNA database (https://fossilinsectdatabase.co.uk/) does a good job of capturing these, but does not seem to be updated for more recent papers post the 2000s. A search of EDNA does not indicate any Cerambycids that have been described. A general internet search found one specimen that looks awfully like a Cerambycid but it is actually a Chrysomelid. https://www.livescience.com/attenborough-beauty-beetle-fossil.html. Its entirely possible that your specimen has not been described but thats typical with the Green River insect fauna which appears to be very diverse with too few people and time to get to them all.