Where: Cassia County, Idaho (42.2° N, 114.1° W: paleocoordinates 42.9° N, 111.2° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Beaverdam Formation, Miocene (23.0 - 5.3 Ma)
• flora is from the Beaverdam Formation, the oldest formation of the Idavada volcanics.
Environment/lithology: lacustrine
Size class: mesofossils
Preservation: mold/impression, original carbon
Collection methods: bulk,
Primary reference: D.I. Axelrod. 1964. The Miocene Trapper Creek Flora of Southern Idaho. University of California Publications in Geological Sciences 51:1-148 [B. Tiffney/J. Fosdick/J. Fosdick]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 35278: authorized by Bruce Tiffney, entered by Julia Fosdick on 23.11.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pinopsida | |
Larix cassiana, Pseudotsuga longifolia, Picea magna, Picea sonomensis, Pinus harneyana, Pinus wheeleri, Tsuga mertensioides, Abies klamathensis, Abies sonomensis, Abies toxirivus, Abies alvordensis, Abies concoloroides
Larix cassiana larch
Picea magna spruce
Picea sonomensis spruce
Pinus harneyana pine
Pinus wheeleri Cockerell 1908 pine
Abies sonomensis fir
Abies toxirivus fir
Abies concoloroides Brown 1940 fir | |
Sequoiadendron chaneyi cypress
Chamaecyparis linguaefolia cypress
Thuja dimorpha cypress
Libocedrus masoni cypress | |
Dicotyledoneae | |
Halesia columbiana silverbell | |
Angiospermae | |
Rhus alvordensis sumac | |
Acer columbianum maple
Acer oregonianum Knowlton 1902 maple
Acer glabroides Brown 1937 maple
Acer scottiae MacGinitie 1933 maple
Acer minor Knowlton 1902 maple
Acer bolanderi Lesquereux 1878 maple | |
Pterocarya mixta wingnut | |
Alnus hollandiana alder
Alnus relatus alder
Alnus fossilis alder
Betula ashleyi birch
Betula vera birch
Betula thor Knowlton 1926 birch | |
Amelanchier couleeana shadbush | |
Sophora spokanensis Knowlton 1926 | |
Prunus chaneyi plum
Prunus treasheri plum | |
Salix hesperia willow
Salix cassiana willow
Salix knowltoni willow
Populus eotremuloides Knowlton 1898 poplar | |
Potamogeton knowltoni pondweed | |
Nymphaeites nevadensis Brown 1938 water lily | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Sassafras columbiana sassafras
Persea pseudocarolinensis Lesquereux 1878 laurel | |
Cornus ovalis Lesquereux 1878 dogwood | |
Nyssa hesperia tupelo | |
Ilex idahoensis holly | |
Hydrangea bendirei Ward 1885 hydrangea | |
"Acer bendirei" = Platanus bendirei
"Acer bendirei" = Platanus bendirei Lesquereux 1888 plane tree | |
Mahonia reticulata barberry
Mahonia simplex barberry | |
Polypodiopsida | |
Equisetum alexanderi horsetail |