Also known as USGS sites 66, 93, and 69
Where: Beaverhead County, Montana (45.0° N, 113.2° W: paleocoordinates 45.7° N, 110.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Miocene (23.0 - 5.3 Ma)
• bed-level stratigraphic resolution
Environment/lithology: lacustrine - large; carbonaceous shale
Size class: macrofossils
Preservation: mold/impression, adpression, original carbon
Reposited in the USGS
Collection methods: surface (in situ),
Primary reference: H. F. Becker. 1969. Fossil Plants of the Tertiary Beaverhead Basins in Southwestern Montana. Palaeontographica Abteilung B 127:1-142 [H. Sims/H. Lindon/J. Alroy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 23973: authorized by Hallie Sims, entered by Heather Lindon on 25.07.2002, edited by Summer Ostrowski and Hallie Sims
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pinopsida | |
Pseudotsuga longifolia, Pseudotsuga sonomensis, Picea lahontensis, Picea magna, Picea sonomensis, Pinus florissanti, Pinus wheeleri, Pseudolarix americana, Abies alvordensis, Abies laticarpa, Abies concoloroides
Picea lahontensis spruce
Picea magna spruce
Picea sonomensis spruce
Pinus florissanti Lesquereux 1883 pine
Pinus wheeleri Cockerell 1908 pine
Abies laticarpa fir
Abies concoloroides Brown 1940 fir | |
Sequoia affinis, Metasequoia occidentalis, Glyptostrobus oregonensis, Chamaecyparis linguaefolia, Juniperus nevadensis
Sequoia affinis Lesquereux 1876 coast redwood
Metasequoia occidentalis Chaney 1951 dawn redwood
Glyptostrobus oregonensis Chinese swamp cypress
Chamaecyparis linguaefolia cypress
Juniperus nevadensis juniper | |
Dicotyledoneae | |
Angiospermae | |
Ailanthus americana Cockerell 1908 | |
Cedrela lancifolia mahogany
Cedrela pteraformis mahogany | |
Astronium truncatum cashew | |
Acer glabroides Brown 1937 maple
Cardiospermum terminalis soapberry
Sapindus coloradensis Cockerell 1908 soapnut | |
Ptelea miocenica hoptree | |
Tilia aspera linden | |
Sterculia wilcoxiana tropical chestnut | |
Celastrus typicus bittersweet | |
Carya libbeyi hickory | |
Betula vera birch
Betula fairii Knowlton 1926 birch
Ostrya oregoniana hophornbeam
Carpinus fraterna Lesquereux 1883 hornbeam | |
Myrica serrulata bayberry | |
Castanea miomollissima, Quercus eoprinus, Quercus hannibali, Quercus winstanleyi, Quercus pseudolyrata, Quercus prelobata, Fagopsis longifolia
Castanea miomollissima chestnut
Quercus eoprinus oak
Quercus pseudolyrata Lesquereux 1878 oak
Quercus prelobata Condit 1944 oak
Fagopsis longifolia Lesquereux 1872 | |
Diphysa presuberosa legume
Dalbergia retusa legume
Cercis parvifolia Lesquereux 1883 redbud
Cassia hesperia legume | |
Colubrina preelliptica, Colubrina cf. asiatica, Berchemia huanoides, Paliurus dumosus, Ceanothus prespinosus
Colubrina preelliptica buckthorn
Colubrina cf. asiatica buckthorn
Berchemia huanoides buckthorn
Paliurus dumosus buckthorn
Ceanothus prespinosus ceanothus | |
Crataegus pacifica hawthorn | |
Robinia californica Axelrod 1939 | |
Rosa hilliae, Vauquelinia coloradensis, Potentilla horkelioides, Potentilla salmonensis, Cercocarpus beaannae
Rosa hilliae Lesquereux 1883 rose
Potentilla horkelioides cinquefoil
Potentilla salmonensis cinquefoil
Cercocarpus beaannae rose | |
Pithecolobium eocenicum Berry 1916 | |
Populus payettensis poplar
Populus balsamoides Göppert 1855 poplar | |
Arundo pseudogoepperti Berry 1914 | |
Nymphaeites nevadensis Brown 1938 water lily
Nuphar advenoides water lily | |
Smilax trinervis greenbrier | |
Poacites "sp. 1" Brongniart 1822 grass
Poacites "sp. 2" Brongniart 1822 grass
Phragmites alaskana Heer 1869 common reed | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Sassafras columbiana sassafras | |
Cornus cornella dogwood | |
Cercidiphyllum arcticum katsura | |
Platanus stenoloba plane tree
Platanus dissecta Lesquereux 1878 plane tree | |
Nelumbo sp. Adanson 1763 lotus | |
Mahonia hakeaeformis barberry
Mahonia limirivuli barberry
Mahonia reticulata barberry
Mahonia simplex barberry
Mahonia lobodonta Becker 1959 barberry | |
Ginkgoopsida | |
Ginkgo adiantoides Unger 1845 ginkgo | |
Polypodiopsida | |
Pteris sp. Linnaeus 1753 | |
Equisetum arcticum Heer 1866 horsetail | |