PBDB Collection

Florissant locality 1, Denver Museum Collection CENSUS (Eocene to of the United States)

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

• Lake was situated close to volcanic source; a probable source is the Guffey volcano, 15 miles southwest of Florissant.

• From MacGinitie: Frequent alternations of fine-grained paper shales and bedded tuffs showing a considerable variety of color, texture, and thickness of strata. The best and most abundant plant and insect fossils are found in paper shales.

•

•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)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Athyana haydenii Athyana haydenii
Hexactinellida
Lychniscosa - Camerospongiidae	Robinia lesquereuxi Robinia lesquereuxi glass sponge
Polypodiopsida
Polypodiales - Polypodiidae	Dryopteris guyottii Dryopteris guyottii
Pinopsida
Pinales - Pinaceae	Pinus sp., Pinus florissanti, Pinus hambachi Pinus sp. Linnaeus 1753 pine Pinus seed Pinus florissanti Lesquereux 1883 pine Pinus hambachi Kirchner 1898 pine

Coniferales - Cupressaceae	Chamaecyparis linguaefolia, Chamaecyparis sp., Sequoia sp., Sequoia affinis Chamaecyparis linguaefolia cypress Chamaecyparis sp. Spach 1841 cypress Chamaecyparis cone Sequoia sp. Endlicher 1847 coast redwood Sequoia cone Sequoia affinis Lesquereux 1876 coast redwood
Angiospermae
Poales - Typhaceae	Typha lesquereuxi Typha lesquereuxi Cockerell 1908 bulrush
Proteales - Proteaceae	Lomatia sp. Lomatia sp. Brown 1810 Lomatia seed
Ranunculales - Berberidaceae	Mahonia marginata Mahonia marginata barberry
Lamiales - Oleaceae	Osmanthus praemissa Osmanthus praemissa Lesquereux 1883
Fagales - Fagaceae	Fagopsis sp., Fagopsis sp., Fagopsis longifolia, Quercus scottii, Quercus dumosoides, Quercus scudderi, Castanea dolichophylla Fagopsis sp. Hollick 1909 Fagopsis cone Fagopsis sp. Hollick 1909 Fagopsis seed Fagopsis longifolia Lesquereux 1872 Quercus scottii oak Quercus dumosoides oak Quercus scudderi Knowlton 1916 oak Castanea dolichophylla chestnut
Fagales - Juglandaceae	Carya libbeyi, Carya sp. Carya libbeyi hickory Carya sp. Nuttall 1818 hickory Carya fruit
Celastrales - Celastraceae	Celastrus typica Celastrus typica bittersweet
Rosales -	Caesalpinites acuminatus Caesalpinites acuminatus
Rosales - Rhamnaceae	Zizyphus florissanti, Rhamnites pseudostenophyllus, Colubrina spireaefolia Zizyphus florissanti buckthorn Rhamnites pseudostenophyllus buckthorn Colubrina spireaefolia buckthorn
Rosales - Ulmaceae	Ulmus tenuinervis, Cedrelospermum sp., Cedrelospermum lineatum Ulmus tenuinervis Lesquereux 1873 elm Cedrelospermum sp. Saporta 1889 elm Cedrelospermum lineatum elm
Rosales - Rosaceae	Vauquelinia coloradensis, Cercocarpus myricaefolius, Cercocarpus sp., Prunus gracilis Vauquelinia coloradensis rose Cercocarpus myricaefolius rose Cercocarpus sp. Humboldt et al. 1823 rose Cercocarpus fruit Prunus gracilis plum
Rosales - Pomaceae	Crataegus copeana, Crataegus nupta, Amelanchier scudderi Crataegus copeana hawthorn Crataegus nupta hawthorn Amelanchier scudderi Cockerell 1906 shadbush
Fabales - Fabaceae	? Fabaceae indet., Cercis parvifolia ? Fabaceae indet. Lindley 1836 legume Legume ? seed Cercis parvifolia Lesquereux 1883 redbud
Malpighiales - Salicaceae	Populus crassa, Salix taxifolioides, Salix coloradica, Salix ramaleyi Populus crassa Lesquereux 1883 poplar Salix taxifolioides willow Salix coloradica willow Salix ramaleyi Cockerell 1906 willow
Sapindales - Sapindaceae	Sapindus coloradensis, Dipteronia insignis, Acer florissanti, Koelreuteria alleni, Koelreuteria sp., Cardiospermum terminalis Sapindus coloradensis Cockerell 1908 soapnut Dipteronia insignis soapberry Acer florissanti Kirchner 1898 maple Koelreuteria alleni golden rain tree Koelreuteria sp. Laxmann 1772 golden rain tree Koelreuteria capsule Cardiospermum terminalis soapberry
Sapindales - Anacardiaceae	Schmaltzia vexans, Astronium truncatum, Rhus stellariaefolia, Rhus obscura, Rhus lesquereuxi, Cotinus fraterna Schmaltzia vexans Lesquereux 1883 cashew Astronium truncatum cashew Rhus stellariaefolia sumac Rhus obscura sumac Rhus lesquereuxi sumac Cotinus fraterna Lesquereux 1883 cashew
Sapindales - Burseraceae	Bursera serrulata Bursera serrulata
Sapindales - Meliaceae	Trichilia florissanti, Cedrela lancifolia, Cedrela sp. Trichilia florissanti mahogany Cedrela lancifolia mahogany Cedrela sp. Browne 1756 mahogany Cedrela seed
Crossosomatales - Staphyleaceae	Staphylea acuminata Staphylea acuminata Lesquereux 1873 bladdernut
Alismatales - Potamogetonaceae	? Potamogeton sp. ? Potamogeton sp. Linnaeus 1753 pondweed
Dicotyledoneae
Myrtales - Myrtaceae	Eugenia arenaceaeformis Eugenia arenaceaeformis myrtle