Sample C, Titusville Site (1967 excavation) (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, Late/Upper Pleistocene (0.1 - 0.0 Ma)

Environment/lithology: mire or swamp; unlithified peat

• The maximum zone of overlap lies in the transition between the northern hardwood forest and the southern boreal forest, an area whose climate is analogous to that of southern Ontario. Mean July temperatures in this region range from 18 to 20C.

Size class: mesofossils

Collected in 1967

Collection methods: quarrying, sieve

• 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 137211: authorized by Matthew Clapham, entered by Jered Karr on 12.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Coleoptera - Helophoridae
Helophorus sempervarians Angus 1970 water scavenger beetle
 Coleoptera - Staphylinidae
Olophrum rotundicolle Sahlberg 1817 rove beetle
Pycnoglypta sp. Thomson 1858 winter rove beetle
Pycnoglypta aptera or Pycnoglypta lucida
Pycnoglypta aptera Campbell 1983 winter rove beetle
 Coleoptera - Carabidae
"Bembidion cf. versicolor" = Bembidion (Furcacampa) versicolor, "Trechus crassiscapus" = Trechus (Trechus) crassiscapus
"Bembidion cf. versicolor" = Bembidion (Furcacampa) versicolor LeConte 1847 ground beetle
"Trechus crassiscapus" = Trechus (Trechus) crassiscapus Lindroth 1955 ground beetle