Where: Nunavut, Canada (79.9° N, 89.0° W: paleocoordinates 79.4° N, 49.2° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Buchanan Lake Formation (Eureka Sound Group), Uintan (46.2 - 39.7 Ma)
• The stratigraphic occurrence of the specimen is from the Buchanan Lake Formation of the Eureka Sound Group; it was retrieved from the upper lignitic, coal-bearing member. It is of middle Eocene age (Ricketts and McIntyre, 1986), corresponding to the Uintan North American land mammal age (41.3–47.5 Ma) and the Lutetian Stage (Gradstein and Ogg, 1996).
Environment/lithology: "floodplain"; unlithified sandstone
Size classes: macrofossils, mesofossils
Primary reference: C. C. Labandeira, B. A. LePage, and A. H. Johnson. 2001. A Dendroctonus bark engraving (Coleoptera: Scolytidae) from a middle Eocene Larix (Coniferales: Pinaceae): early or delayed colonization?. American Journal of Botany 88(11):2026-2039 [M. Clapham/J. Karr/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 139662: authorized by Matthew Clapham, entered by Jered Karr on 15.02.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
| |
Angiospermae | |
Carya sp. Nuttall 1818 hickory | |
Betula sp. Linnaeus 1753 birch
Alnus sp. Miller 1754 alder | |
Cercidiphyllum sp. Siebold and Zuccarini 1846 katsura | |
Chamaecyparis sp. Spach 1841 cypress
Glyptostrobus sp. Endlicher 1847 Chinese swamp cypress
Metasequoia sp. Miki 1941 dawn redwood | |
Pinopsida | |
Picea sp. Dietrich 1824 spruce
Larix altoborealis larch
Pinus sp. Linnaeus 1753 pine
Keteleeria sp. Carrière 1866
Tsuga sp. Carrière 1855
Pseudolarix sp. Gordon and Glendinning 1858 |