Also known as University of California Locality 3733
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 658 specimens listed, 19 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 39851: authorized by Peter Wilf, entered by Jocelyn Sessa on 09.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Hexactinellida | |
Robinia lesquereuxi glass sponge | |
Polypodiopsida | |
Pinopsida | |
Pinus florissanti Lesquereux 1883 pine
Pinus hambachi Kirchner 1898 pine | |
Chamaecyparis linguaefolia cypress
Sequoia affinis Lesquereux 1876 coast redwood | |
Angiospermae | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Mahonia marginata barberry | |
Persea florissantia laurel | |
Fagopsis longifolia Lesquereux 1872
Quercus scottii oak | |
Carya libbeyi hickory | |
Celastrus typica bittersweet | |
Rhamnites pseudostenophyllus buckthorn
Colubrina spireaefolia buckthorn | |
Ulmus tenuinervis Lesquereux 1873 elm
Cedrelospermum sp. Saporta 1889 elm | |
Prunus gracilis plum | |
Cercis parvifolia Lesquereux 1883 redbud | |
Populus crassa Lesquereux 1883 poplar
Salix taxifolioides willow
Salix coloradensis willow
Salix ramaleyi Cockerell 1906 willow | |
Dipteronia insignis soapberry
Acer florissanti Kirchner 1898 maple
Cardiospermum terminalis soapberry | |
Astronium calyx cashew
Rhus stellariaefolia sumac
Rhus obscura sumac
Cotinus fraterna Lesquereux 1883 cashew | |
Trichilia florissanti mahogany | |
Staphylea acuminata Lesquereux 1873 bladdernut |