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 | |
Pseudotsuga longifolia, Picea magna, Picea sonomensis, Larix cassiana, Abies klamathensis, Abies sonomensis, Abies toxirivus, Abies alvordensis, Abies concoloroides, Tsuga mertensioides, Pinus harneyana, Pinus wheeleri
Picea magna spruce
Picea sonomensis spruce
Larix cassiana larch
Abies sonomensis fir
Abies toxirivus fir
Abies concoloroides Brown 1940 fir
Pinus harneyana pine
Pinus wheeleri Cockerell 1908 pine | |
Sequoiadendron chaneyi cypress
Thuja dimorpha cypress
Chamaecyparis linguaefolia cypress
Libocedrus masoni cypress | |
Dicotyledoneae | |
Halesia columbiana silverbell | |
Angiospermae | |
Typha lesquereuxi Cockerell 1908 bulrush | |
Mahonia reticulata barberry
Mahonia simplex barberry | |
"Acer bendirei" = Platanus bendirei
"Acer bendirei" = Platanus bendirei Lesquereux 1888 plane tree | |
Ilex idahoensis holly | |
Nyssa hesperia tupelo | |
Cornus ovalis Lesquereux 1878 dogwood | |
Hydrangea bendirei Ward 1885 hydrangea | |
Sassafras columbiana sassafras
Persea pseudocarolinensis Lesquereux 1878 laurel | |
Acer columbianum maple
Acer oregonianum Knowlton 1902 maple
Acer bolanderi Lesquereux 1878 maple
Acer minor Knowlton 1902 maple
Acer glabroides Brown 1937 maple
Acer scottiae MacGinitie 1933 maple | |
Rhus alvordensis sumac | |
Betula ashleyi birch
Betula vera birch
Betula thor Knowlton 1926 birch
Alnus hollandiana alder
Alnus relatus alder
Alnus fossilis alder | |
Pterocarya mixta wingnut | |
Sophora spokanensis Knowlton 1926 | |
Amelanchier couleeana shadbush | |
Prunus chaneyi plum
Prunus treasheri plum | |
Salix hesperia willow
Salix cassiana willow
Salix knowltoni willow
Populus eotremuloides Knowlton 1898 poplar | |
Nymphaeites nevadensis Brown 1938 water lily | |
Potamogeton knowltoni pondweed | |
Polypodiopsida | |
Equisetum alexanderi horsetail |