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 169336: 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
Myrmica lobifrons Pergande 1900 ant | |
Limnephilidae indet. Kolenati 1848 caddisfly | |
Corticaria sp. Marsham 1802 minute brown scavenger beetle | |
Chrysomelidae indet. Latreille 1802 leaf beetle
Longitarsus sp. Berthold 1827 leaf beetle | |
"Tanysphyrus lemnae" = Tanysphyrus (Tanysphyrus) lemnae, Magdalis lecontei, "Xyleborus saxeseni" = Xyleborinus saxeseni, Scolytus piceae, Polygraphus rufipennis, Hylastes nigrinus
"Tanysphyrus lemnae" = Tanysphyrus (Tanysphyrus) lemnae Fabricius 1792 snout beetle
Magdalis lecontei Horn 1873 snout beetle
"Xyleborus saxeseni" = Xyleborinus saxeseni Ratzeburg 1834 bark beetle
Scolytus piceae Swaine 1910 bark beetle
Polygraphus rufipennis Kirby 1837 bark beetle
Hylastes nigrinus Mannerheim 1852 bark beetle | |
Leptophloeus cf. alternans Erichson 1846 beetle | |
Rhizophagus remotus Le Conte 1866 root eating beetle | |
Elateridae indet. Leach 1815 click beetle | |
Arctobyrrhus subcanus LeConte 1878 pill beetle | |
Pycnoglypta lurida, Eucnecosum brachypterum, Lordithon longiceps, Aleocharinae indet., Neohypnus sp., Tachyporus nimbicola, "Tachinus lanei" = Nitidotachinus lanei, Tachinus elongatus
Pycnoglypta lurida Gyllenhal 1813 winter rove beetle
Eucnecosum brachypterum Gravenhorst 1802 rove beetle
Lordithon longiceps LeConte 1863 rove beetle
Aleocharinae indet. Fleming 1821 rove beetle
Neohypnus sp. Coiffait and Saiz 1964 rove beetle
Tachyporus nimbicola Campbell 1979 rove beetle
"Tachinus lanei" = Nitidotachinus lanei Hatch 1957 rove beetle
Tachinus elongatus Gyllenhal 1810 rove beetle | |
"Aphodius plutonicus" = Agoliinus plutonicus, Dialytes sp.
"Aphodius plutonicus" = Agoliinus plutonicus Fall 1907 scarab beetle
Dialytes sp. Harold 1869 scarab beetle | |
Hydrobius fuscipes Linnaeus 1758 water scavenger beetle | |
"Bembidion coloradense" = Bembidion (Notaphus) coloradense, "Bembidion constricticolle" = Bembidion (Neobembidion) constricticolle, "Bembidion bimaculatum" = Bembidion (Asioperyphus) bimaculatum, Dyschirius sp.
"Bembidion coloradense" = Bembidion (Notaphus) coloradense Hayward 1897 ground beetle
"Bembidion constricticolle" = Bembidion (Neobembidion) constricticolle Hayward 1897 ground beetle
"Bembidion bimaculatum" = Bembidion (Asioperyphus) bimaculatum Kirby 1837 ground beetle
Dyschirius sp. Bonelli 1810 ground beetle | |
Phthiraptera indet. parasitic louse |