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 | |
Ginkgoopsida | |
Ginkgo adiantoides Unger 1845 ginkgo | |
Polypodiopsida | |
Pteris sp. Linnaeus 1753 | |
Equisetum arcticum Heer 1866 horsetail | |
Pinopsida | |
Pinus wheeleri, Pinus florissanti, Abies alvordensis, Abies laticarpa, Abies concoloroides, Pseudolarix americana, Pseudotsuga longifolia, Pseudotsuga sonomensis, Picea lahontensis, Picea magna, Picea sonomensis
Pinus wheeleri Cockerell 1908 pine
Pinus florissanti Lesquereux 1883 pine
Abies laticarpa fir
Abies concoloroides Brown 1940 fir
Picea lahontensis spruce
Picea magna spruce
Picea sonomensis spruce | |
Glyptostrobus oregonensis, Sequoia affinis, Metasequoia occidentalis, Juniperus nevadensis, Chamaecyparis linguaefolia
Glyptostrobus oregonensis Chinese swamp cypress
Sequoia affinis Lesquereux 1876 coast redwood
Metasequoia occidentalis Chaney 1951 dawn redwood
Juniperus nevadensis juniper
Chamaecyparis linguaefolia cypress | |
Angiospermae | |
Celastrus typicus bittersweet | |
Carya libbeyi hickory | |
Myrica serrulata bayberry | |
Quercus eoprinus, Quercus hannibali, Quercus winstanleyi, Quercus pseudolyrata, Quercus prelobata, Fagopsis longifolia, Castanea miomollissima
Quercus eoprinus oak
Quercus pseudolyrata Lesquereux 1878 oak
Quercus prelobata Condit 1944 oak
Fagopsis longifolia Lesquereux 1872
Castanea miomollissima chestnut | |
Betula vera birch
Betula fairii Knowlton 1926 birch
Carpinus fraterna Lesquereux 1883 hornbeam
Ostrya oregoniana hophornbeam | |
Dalbergia retusa legume
Cercis parvifolia Lesquereux 1883 redbud
Cassia hesperia legume
Diphysa presuberosa legume | |
Populus payettensis poplar
Populus balsamoides Göppert 1855 poplar | |
Crataegus pacifica hawthorn | |
Rosa hilliae, Cercocarpus beaannae, Vauquelinia coloradensis, Potentilla horkelioides, Potentilla salmonensis
Rosa hilliae Lesquereux 1883 rose
Cercocarpus beaannae rose
Potentilla horkelioides cinquefoil
Potentilla salmonensis cinquefoil | |
Colubrina preelliptica, Colubrina cf. asiatica, Ceanothus prespinosus, Paliurus dumosus, Berchemia huanoides
Colubrina preelliptica buckthorn
Colubrina cf. asiatica buckthorn
Ceanothus prespinosus ceanothus
Paliurus dumosus buckthorn
Berchemia huanoides buckthorn | |
Pithecolobium eocenicum Berry 1916 | |
Robinia californica Axelrod 1939 | |
Sapindus coloradensis Cockerell 1908 soapnut
Cardiospermum terminalis soapberry
Acer glabroides Brown 1937 maple | |
Astronium truncatum cashew | |
Ptelea miocenica hoptree | |
Cedrela lancifolia mahogany
Cedrela pteraformis mahogany | |
Ailanthus americana Cockerell 1908 | |
Sterculia wilcoxiana tropical chestnut | |
Tilia aspera linden | |
Dicotyledoneae | |
Angiospermae | |
Arundo pseudogoepperti Berry 1914 | |
Sassafras columbiana sassafras | |
Phragmites alaskana Heer 1869 common reed
Poacites "sp. 1" Brongniart 1822 grass
Poacites "sp. 2" Brongniart 1822 grass | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Smilax trinervis greenbrier | |
Cornus cornella dogwood | |
Cercidiphyllum arcticum katsura | |
Mahonia hakeaeformis barberry
Mahonia limirivuli barberry
Mahonia reticulata barberry
Mahonia simplex barberry
Mahonia lobodonta Becker 1959 barberry | |
Nelumbo sp. Adanson 1763 lotus | |
Platanus stenoloba plane tree
Platanus dissecta Lesquereux 1878 plane tree | |
Nymphaeites nevadensis Brown 1938 water lily
Nuphar advenoides water lily |