Also known as University of California Locality 3732
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
Size class: macrofossils
Preservation: mold/impression, original carbon
Reposited in the UCMP
Collection methods: bulk,
• Out of the 1339 specimens listed, 69 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 39849: authorized by Peter Wilf, entered by Jocelyn Sessa on 09.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Hexactinellida | |
Robinia lesquereuxi glass sponge | |
Polypodiopsida | |
Angiospermae | |
? Potamogeton sp. Linnaeus 1753 pondweed | |
Dicotyledoneae | |
Eugenia arenaceaeformis myrtle | |
Angiospermae | |
Rhus stellariaefolia sumac
Rhus obscura sumac
Rhus lesquereuxi sumac
Schmaltzia vexans Lesquereux 1883 cashew
Cotinus fraterna Lesquereux 1883 cashew | |
Cedrela lancifolia mahogany
Trichilia florissanti mahogany | |
Athyana haydenii, Koelreuteria alleni, Koelreuteria sp., Acer florissanti, Cardiospermum terminalis, Sapindus coloradensis
Athyana haydenii soapberry
Koelreuteria alleni golden rain tree
Acer florissanti Kirchner 1898 maple
Cardiospermum terminalis soapberry
Sapindus coloradensis Cockerell 1908 soapnut | |
Staphylea acuminata Lesquereux 1873 bladdernut | |
Carya libbeyi hickory | |
Populus crassa Lesquereux 1883 poplar
Salix ramaleyi Cockerell 1906 willow | |
Prunus gracilis plum | |
Zizyphus florissanti buckthorn
Rhamnites pseudostenophyllus buckthorn | |
Cedrelospermum sp. Saporta 1889 elm
Ulmus tenuinervis Lesquereux 1873 elm | |
Crataegus copeana hawthorn | |
Cercis parvifolia Lesquereux 1883 redbud | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Mahonia marginata barberry | |
| |
Osmanthus praemissa Lesquereux 1883 | |
Sequoia affinis Lesquereux 1876 coast redwood
Chamaecyparis linguaefolia cypress | |
Pinopsida | |
Pinus hambachi Kirchner 1898 pine
Pinus florissanti Lesquereux 1883 pine |