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