Sample 2, Titusville Site (0-60 cm) (Pleistocene of the United States)

Where: Pennsylvania (41.6° N, 79.6° W: paleocoordinates 41.6° N, 79.6° W)

• coordinate stated in text

• hand sample-level geographic resolution

When: Titusville Till Formation, Tarantian (0.1 - 0.0 Ma)

• slightly below sample 1 which is dated as 39070 years old

Environment/lithology: mire or swamp; unlithified peat

Size class: mesofossils

Collection methods: quarrying, sieve

• In 1990, 174 kg of peat and silt from six samples was collected from the three organic horizons at depths of 0–60, 120–155, and 245–255 cm, respectively (Fig. 2). The 0-cm data position was defined at the top of the upper organic horizon. Chitinous remains of insects were recovered from the samples using a kerosene flotation technique (Ashworth, 1979). Disaggregation of highly compressed peats was aided by soaking them in a 5% NaOH solution. Arthropod remains were abundant and well preserved in all samples. All specimens, including those examined by Totten and Coope in 1967, were mounted onto micropaleontological slides and reposited in the Quaternary Entomology Laboratory at North Dakota State University.

Primary reference: S. Cong, A. C. Ashworth, D. P. Schwert and S. M. Totten. 1996. Fossil Beetle Evidence for a Short Warm Interval near 40,000 yr B.P. at Titusville, Pennsylvania. Quaternary Research 45:216-225 [M. Clapham/J. Karr/J. Karr]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 137204: authorized by Matthew Clapham, entered by Jered Karr on 12.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hymenoptera - Formicidae
Formicidae indet. Latreille 1802 ant
 Coleoptera - Byrrhidae
Curimopsis cf. moosilauke Johnson 1986 pill beetle
Cytilus alternatus Say 1825 pill beetle
 Coleoptera - Hydrophilidae
Hydrophilidae indet. Latreille 1802 water scavenger beetle
Enochrus sp. Thomson 1859 water scavenger beetle
 Coleoptera - Helophoridae
Helophorus sp. Fabricius 1775 water scavenger beetle
 Coleoptera - Silphidae
Thanatophilus sp. Leach 1815 carrion beetle
 Coleoptera - Staphylinidae
Staphylinidae indet. Latreille 1802 rove beetle
Euaesthetinae indet. Thomson 1859 rove beetle
"Scydmaenidae indet." = Scydmaeninae Leach 1815 antlike stone beetle
Aleocharinae indet. Fleming 1821 rove beetle
Gymnusa sp. Gravenhorst 1806 rove beetle
Stenus sp. Latreille 1796 rove beetle
"Pselaphidae indet." = Pselaphinae Latreille 1802 rove beetle
Bledius sp. Leach 1819 rove beetle
Omaliinae indet. MacLeay 1825 rove beetle
Olophrum consimile Gyllenhal 1810 rove beetle
Olophrum rotundicolle Sahlberg 1817 rove beetle
Eucnecosum sp. Reitter 1909 rove beetle
Eucnecosum brunnescens Sahlberg 1871 rove beetle
"Holoboreaphilus nordenskioeldi" = Holoboreaphilus nordenskioldi Maklin 1878 rove beetle
Pycnoglypta sp. Thomson 1858 winter rove beetle
Pycnoglypta aptera or Pycnoglypta lurida
Tachyporinae indet. MacLeay 1825 rove beetle
"Tachinus tachyporoides" = Nitidotachinus tachyporoides Horn 1877 rove beetle
Mycetoporus sp. Mannerheim 1830 rove beetle
 Coleoptera - Leiodidae
Catops sp. Paykull 1798 round fungus beetle
 Coleoptera - Chrysomelidae
Chrysomelidae indet. Latreille 1802 leaf beetle
Mantura sp. Stephens 1831 flea beetle
 Coleoptera - Curculionidae
"Erirhinus aethiops" = Notaris aethiops, "Ceutorhynchinae indet." = Ceutorhynchitae, Pelenomus sp., Pityophthorus sp., Carphoborus andersoni
"Erirhinus aethiops" = Notaris aethiops Fabricius 1792 snout beetle
"Ceutorhynchinae indet." = Ceutorhynchitae Gistel 1848 snout beetle
Pelenomus sp. Thomson 1859 snout beetle
Pityophthorus sp. Eichhoff 1864 bark beetle
Carphoborus andersoni Swaine 1919 bark beetle
 Coleoptera - Brentidae
Apion sp. Herbst 1797 weevil
 Coleoptera - Scarabaeidae
Aegialia sp. Latreille scarab beetle
Aphodius sp. Illiger 1798 scarab beetle
 Coleoptera - Dytiscidae
Colymbetes sp. Schellenberg 1806 predaceous diving beetle
 Coleoptera - Carabidae
Carabidae indet. Latreille 1802 ground beetle
Blethisa catenaria Brown 1944 ground beetle
Elaphrus americanus Dejean 1831 ground beetle
Elaphrus lapponicus Gyllenhal 1810 ground beetle
"Carabus maeander" = Carabus (Homoeocarabus) maeander Fischer von Waldheim 1822 ground beetle
Amara sp. Bonelli 1810 ground beetle
"Pterostichus patruelis" = Pterostichus (Phonias) patruelis Dejean 1831 ground beetle
"Cymindis cribricollis" = Cymindis (Tarulus) cribricollis Dejean 1831 ground beetle
Notiophilus sp. Duméril 1805 ground beetle
Bembidion "anguliferum group" Latreille 1802 ground beetle
"Trechus crassiscapus" = Trechus (Trechus) crassiscapus Lindroth 1955 ground beetle
Dyschirius sp. Bonelli 1810 ground beetle
Patrobus sp. Dejean 1821 ground beetle
Patrobus foveocollis Eschscholtz 1823 ground beetle
Patrobus septentrionis Dejean 1828 ground beetle
Patrobus stygicus Chaudoir 1872 ground beetle
 Dicondylia -
Trichoptera indet. Kirby 1815 caddisfly