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 5e, 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 169333: authorized by Matthew Clapham, entered by Matthew Clapham on 19.05.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Formica neorufibarbis Emery 1893 ant | |
Limnephilidae indet. Kolenati 1848 caddisfly | |
Pterostichus sp. Bonelli 1810 ground beetle
Bembidion sp. Latreille 1802 ground beetle | |
Epuraea planulata Erichson 1843 sap beetle | |
"Tanysphyrus lemnae" = Tanysphyrus (Tanysphyrus) lemnae Fabricius 1792 snout beetle
Scolytus piceae Swaine 1910 bark beetle
Dolurgus pumilus Mannerheim 1843 bark beetle | |
Elateridae indet. Leach 1815 click beetle | |
Anthaxia prasina Horn 1882 jewel beetle | |
Simplocaria tessellata Le Conte 1850 pill beetle | |
Lathrobium sp., Olophrum sp., Olophrum obtectum, Oxytelus laqueatus, Stenus sp., Thanatophilus coloradensis
Lathrobium sp. Gravenhorst 1802 rove beetle
Olophrum sp. Erichson 1839 rove beetle
Olophrum obtectum Erichson 1840 rove beetle
Oxytelus laqueatus Marsham 1802 rove beetle
Stenus sp. Latreille 1796 rove beetle
Thanatophilus coloradensis Wickham 1902 rove beetle | |
Hydrobius fuscipes Linnaeus 1758 water scavenger beetle |