Sample 5, Titusville Site (140-255 cm): Late Pleistocene, Pennsylvania
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Bembidion morulum
LeConte 1863
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Curculionidae
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Pityophthorus sp.
Eichhoff 1864
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Elateridae
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Elateridae indet.
Leach 1815
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Byrrhidae
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Curimopsis cf. moosilauke
Johnson 1986
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Hydraenidae
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Hydraena sp.
Kugelann 1794
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Staphylinidae
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Staphylinidae indet.
(Latreille 1802)
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4 specimens | |||||||||
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Tachinus tachyporoides
Horn 1877
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1 specimen | |||||||||
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Stenus sp.
Latreille 1796
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20 specimens | |||||||||
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Bledius sp.
Leach 1819
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2 specimens | |||||||||
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Aleocharinae indet.
(Fleming 1821)
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8 specimens | |||||||||
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Euaesthetinae indet.
Thomson 1859
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9 specimens | |||||||||
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Omaliinae indet.
MacLeay 1825
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19 specimens | |||||||||
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Olophrum rotundicolle
(Sahlberg 1817)
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9 specimens | |||||||||
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Acidota quadrata
(Zetterstedt 1837)
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1 specimen | |||||||||
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Pycnoglypta sp.
Thomson 1858
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2 specimens | |||||||||
| Pycnoglypta aptera or Pycnoglypta lurida | ||||||||||
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Quedius sp.
Stephens 1829
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1 specimen | |||||||||
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Insecta
- Coleoptera
- Scarabaeidae
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Aegialia sp.
Latreille 1807
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3 specimens | |||||||||
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Insecta
- Coleoptera
- Helophoridae
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Helophorus sempervarians
Angus 1970
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3 specimens | |||||||||
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Insecta
- Coleoptera
- Hydrophilidae
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Hydrophilidae indet.
Latreille 1802
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2 specimens | |||||||||
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Insecta
- Coleoptera
- Carabidae
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Carabidae indet.
(Latreille 1802)
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2 specimens | |||||||||
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Agonum sp.
Bonelli 1810
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2 specimens | |||||||||
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Agonum gratiosum
(Mannerheim 1853)
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2 specimens | |||||||||
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Agonum quinquepunctatum
Motschulsky 1844
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1 specimen | |||||||||
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Elaphrus lapponicus
Gyllenhal 1810
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1 specimen | |||||||||
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Patrobus sp.
Dejean 1821
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1 specimen | |||||||||
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Patrobus stygicus
Chaudoir 1872
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1 specimen | |||||||||
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Patrobus septentrionis
Dejean 1828
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1 specimen | |||||||||
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Trechus crassiscapus
Lindroth 1955
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2 specimens | |||||||||
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Harpalus sp.
Latreille 1802
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2 specimens | |||||||||
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Pterostichus patruelis
(Dejean 1831)
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1 specimen | |||||||||
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Pterostichus punctatissimus
(Randall 1838)
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1 specimen | |||||||||
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Cymindis cribricollis
Dejean 1831
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1 specimen | |||||||||
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Stereocerus haematopus
(Dejean 1831)
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1 specimen | |||||||||
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Insecta
- Hymenoptera
- Formicidae
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Formicidae indet.
(Latreille 1802)
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3 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Pennsylvania |
| Coordinates: | 41.6° North, 79.6° West (view map) | ||
| Paleocoordinates: | 41.6° North, 79.6° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | hand sample |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late Pleistocene | ||
| Age range of interval: | 0.129 - 0.0117 m.y. ago | ||
| Age estimate: | 40500 ± 1000 YBP (14C (calibrated)) |
Stratigraphy
| Formation: | Titusville Till | ||||
| Stratigraphy comments: Sample from the bottom of the peat layer at roughly 150 cm below the surface. Roughly 40,500 yr B.P. |
Lithology and environment
| Primary lithology: | unlithified peat | ||
| Environment: | mire/swamp | Tectonic setting: | non-subsiding area |
| Geology comments: Faunal analogues to this assemblage occur today in forest-tundra environments of North America west of Hudson Bay, a region where mean July temperatures range from 10 to 13 C. | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
| Temporal resolution: | time-averaged |
Collection methods and comments
| Collection methods: | selective quarrying,sieve |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: 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. | |
Metadata
| Database number: | 137207 | ||
| Authorizer: | M. Clapham | Enterer: | J. Karr |
| Modifier: | M. Clapham | Research group: | paleoentomology |
| Created: | 2012-12-12 10:31:18 | Last modified: | 2015-12-15 18:33:50 |
| Access level: | the public | Released: | 2012-12-12 10:31:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 43873. | 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] |