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