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)
• Sample from the bottom of the peat layer at roughly 150 cm below the surface. Roughly 40,500 yr B.P.
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 137207: authorized by Matthew Clapham, entered by Jered Karr on 12.12.2012
Creative Commons license: CC BY (attribution)