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)
• Late MIS 5a, 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 169353: authorized by Matthew Clapham, entered by Matthew Clapham on 19.05.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Cicadellidae indet. Latreille 1825 leafhopper | |
| |
Myrmica lobifrons Pergande 1900 ant | |
Limnephilidae indet. Kolenati 1848 caddisfly | |
Stilbus pallidus Casey 1890 beetle | |
Mordellistena sp. Costa 1854 tumbling flower beetle
Mordella cf. atrata Melsheimer 1843 tumbling flower beetle | |
Polygraphus rufipennis, Hylastes nigrinus, Dolurgus pumilus, Pityophthorus opaculus, Phloeosinus scopulorum, Scolytus piceae
Polygraphus rufipennis Kirby 1837 bark beetle
Hylastes nigrinus Mannerheim 1852 bark beetle
Dolurgus pumilus Mannerheim 1843 bark beetle
Pityophthorus opaculus LeConte 1878 bark beetle
Phloeosinus scopulorum Swain 1924 bark beetle
Scolytus piceae Swaine 1910 bark beetle | |
Apion attenuatum Smith 1884 weevil | |
Plateumaris germari Mannerheim 1843 reed leaf beetle
Plateumaris pusilla Say 1827 reed leaf beetle | |
Corticaria sp. Marsham 1802 minute brown scavenger beetle | |
Conotelus obscurus Erichson 1843 sap beetle | |
Agrilus liragus Barter and Brown 1949 jewel beetle | |
Agriotes apicalis Le Conte 1884 click beetle | |
Simplocaria tessellata Le Conte 1850 pill beetle | |
Hydraena sp. Kugelann 1794 minute moss beetle
Hydraena cf. circulata Perkins 1980 minute moss beetle | |
Philonthus sp., Quedius sp., Oxytelus laqueatus, Sonoma margemina, Pycnoglypta lurida, Stenus spp., Aleocharinae indet., Atheta sp.
Philonthus sp. Curtis 1829 rove beetle
Quedius sp. Stephens 1829 rove beetle
Oxytelus laqueatus Marsham 1802 rove beetle
Sonoma margemina Park and Wagner 1961 rove beetle
Pycnoglypta lurida Gyllenhal 1813 winter rove beetle
Stenus spp. Latreille 1796 rove beetle
Aleocharinae indet. Fleming 1821 rove beetle
Atheta sp. Thomson 1858 rove beetle | |
Enochrus hamiltoni Horn 1890 water scavenger beetle | |
"Aegialia opaca" = Aegialia (Psammoporus) opaca, Ataenius sp., Aphodius spp., "Aphodius decipiens" = Dialytodius decipiens
"Aegialia opaca" = Aegialia (Psammoporus) opaca Brown 1931 scarab beetle
Ataenius sp. Harold 1867 scarab beetle
Aphodius spp. Hellwig 1798 scarab beetle
"Aphodius decipiens" = Dialytodius decipiens Horn 1887 scarab beetle | |
"Cyphon sp." = Contacyphon
"Cyphon sp." = Contacyphon Des Gozis 1886 marsh beetle | |
"Agabus infuscatus" = Agabus (Acatodes) infuscatus
"Agabus infuscatus" = Agabus (Acatodes) infuscatus Aubé 1838 predaceous diving beetle | |
Harpalus sp. Latreille 1802 ground beetle
Pterostichus sp. Bonelli 1810 ground beetle | |
Omus audouini Reiche 1838 tiger beetle | |
Diptera indet. Linnaeus 1758 fly |