Where: Teller County, Colorado (38.9° N, 105.3° W: paleocoordinates 40.4° N, 97.0° W)

• coordinate based on nearby landmark

When: Middle Shale Member (Florissant Formation), Chadronian (37.2 - 33.9 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, diatomaceous, tuffaceous shale and lithified volcaniclastic

Size class: macrofossils

Preservation: adpression

Collection methods: quarrying, surface (float), surface (in situ),

Primary reference: S. H. Scudder. 1892. Some Insects of special interest from Florissant, Colorado and other points in the Tertiaries of Colorado and Utah. Bulletin of the United States Geological Survey 93:1-25 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34966: authorized by Dena Smith, entered by April Kinchloe on 21.10.2003, edited by Jered Karr and Matthew Clapham

Creative Commons license: CC BY (attribution)