Where: Colorado (38.9° N, 105.3° W: paleocoordinates 40.1° N, 97.8° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Florissant Formation, Late/Upper Eocene to Late/Upper Eocene (37.2 - 28.4 Ma)
• From MacGinitie: Fossils are found in unit 3, about 50 feet of lake shales and associated volcanic sediments. The best and most abundant plant and insect fossils are found in this member, in paper shales at or near its base.
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine; fine-grained, gypsiferous, tuffaceous shale and siltstone
•From Manchester: fossils are preserved in laminated tuffaceous sediments...sediment ranges from siltstone to conglomeratic, but best preserved leaf and fuit remains have been found in the siltstone layers.
Size class: macrofossils
Preservation: mold/impression, original carbon
Reposited in the DMNH
Collection methods: bulk,
• Out of the 2771 specimens listed, 86 are described as 'uncertain affinity'. They are not reported in the occurrence list.
Primary reference: H. D. MacGinitie. 1953. Fossil Plants of the Florissant Beds of Colorado. Carnegie Inst. of Washington, Contributions to Paleontology Publ. 599:1-198 [C. Labandeira/C. Labandeira/M. Kosnik]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 39837: authorized by Peter Wilf, entered by Jocelyn Sessa on 08.06.2004
Creative Commons license: CC BY (attribution)