Where: Pitkin County, Colorado (39.2° N, 107.0° W: paleocoordinates 39.2° N, 107.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• MIS 5c, dated by OSL.

• bed-level stratigraphic resolution

Environment/lithology: pond; unlithified peat

Size class: macrofossils

Collected in 2010-2011; reposited in the DMNH

Collection methods: chemical

• Boiled in a dilute solution of sodiumhexametaphosphate, a dispersant. Most samples disaggregated in this procedure, but a few contained highly felted peats that were subsequently treated in cold, 7% KOH solution to aid disaggregation. The organic fraction of each sample was then wet sieved on a 300 μm screen, and insect fossils were isolated from plant residues by the kerosene flotation method.

Primary reference: S. A. Elias. 2014. Environmental interpretation of fossil insect assemblages from MIS 5 at Ziegler Reservoir, Snowmass Village, Colorado. Quaternary Research 82:592-603 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 169345: authorized by Matthew Clapham, entered by Matthew Clapham on 19.05.2015

Creative Commons license: CC BY (attribution)