PBDB Collection

Trapper Creek Flora (Miocene of the United States)

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

• lake delta

• ashy shale

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

Show authors, comments, and common names

unclassified
-	Ungnadia clarki, Symphoricarpos salmonensis, Garrya idahoensis Ungnadia clarki Symphoricarpos salmonensis Garrya idahoensis
Pinopsida
Pinales - Pinaceae	Pseudotsuga longifolia, Larix cassiana, Picea magna, Picea sonomensis, Pinus harneyana, Pinus wheeleri, Abies klamathensis, Abies sonomensis, Abies toxirivus, Abies alvordensis, Abies concoloroides, Tsuga mertensioides Pseudotsuga longifolia Larix cassiana larch Picea magna spruce Picea sonomensis spruce Pinus harneyana pine Pinus wheeleri Cockerell 1908 pine Abies klamathensis fir Abies sonomensis fir Abies toxirivus fir Abies alvordensis fir Abies concoloroides Brown 1940 fir Tsuga mertensioides

Coniferales - Cupressaceae	Sequoiadendron chaneyi, Libocedrus masoni, Thuja dimorpha, Chamaecyparis linguaefolia Sequoiadendron chaneyi cypress Libocedrus masoni cypress Thuja dimorpha cypress Chamaecyparis linguaefolia cypress
Angiospermae
Alismatales - Potamogetonaceae	Potamogeton knowltoni Potamogeton knowltoni pondweed
Dicotyledoneae
Ericales - Styracaceae	Halesia columbiana Halesia columbiana silverbell
Ericales - Vacciniaceae	Vaccinium sonomensis Vaccinium sonomensis
Angiospermae
Nymphaeales - Nymphaeaceae	Nymphaeites nevadensis Nymphaeites nevadensis Brown 1938 water lily
Fagales - Juglandaceae	Pterocarya mixta Pterocarya mixta wingnut
Fagales - Fagaceae	Quercus hannibali, Quercus mccanni, Quercus simulata Quercus hannibali oak Quercus mccanni oak Quercus simulata Knowlton 1898 oak
Fagales - Betulaceae	Betula ashleyi, Betula vera, Betula thor, Alnus hollandiana, Alnus relatus, Alnus fossilis Betula ashleyi birch Betula vera birch Betula thor Knowlton 1926 birch Alnus hollandiana alder Alnus relatus alder Alnus fossilis alder
Rosales - Ulmaceae	Ulmus moorei, Ulmus speciosa, Zelkova oregoniana Ulmus moorei elm Ulmus speciosa Newberry 1883 elm Zelkova oregoniana zelkova
Rosales - Papilionaceae	Sophora spokanensis Sophora spokanensis Knowlton 1926
Rosales - Rosaceae	Prunus chaneyi, Prunus treasheri Prunus chaneyi plum Prunus treasheri plum
Rosales - Pomaceae	Sorbus cassiana, Amelanchier couleeana Sorbus cassiana rowan Amelanchier couleeana shadbush
Malpighiales - Salicaceae	Salix hesperia, Salix cassiana, Salix knowltoni, Populus eotremuloides Salix hesperia willow Salix cassiana willow Salix knowltoni willow Populus eotremuloides Knowlton 1898 poplar
Sapindales - Anacardiaceae	Rhus alvordensis Rhus alvordensis sumac
Sapindales - Sapindaceae	Acer columbianum, Acer glabroides, Acer bolanderi, Acer minor, Acer oregonianum, Acer scottiae Acer columbianum maple Acer glabroides Brown 1937 maple Acer bolanderi Lesquereux 1878 maple Acer minor Knowlton 1902 maple Acer oregonianum Knowlton 1902 maple Acer scottiae MacGinitie 1933 maple
Vitales - Vitaceae	Parthenocissus idahoensis Parthenocissus idahoensis
Saxifragales - Saxifragaceae	Hydrangea bendirei Hydrangea bendirei Ward 1885 hydrangea
Cornales - Nyssaceae	Nyssa hesperia Nyssa hesperia tupelo
Cornales - Cornaceae	Cornus ovalis Cornus ovalis Lesquereux 1878 dogwood
Aquifoliales - Aquifoliaceae	Ilex idahoensis Ilex idahoensis holly
Lamiales - Oleaceae	Fraxinus coulteri Fraxinus coulteri ash
Ranunculales - Berberidaceae	Mahonia reticulata, Mahonia simplex Mahonia reticulata barberry Mahonia simplex barberry
Proteales - Platanaceae	"Acer bendirei" = Platanus bendirei "Acer bendirei" = Platanus bendirei Lesquereux 1888 plane tree
Poales - Typhaceae	Typha lesquereuxi Typha lesquereuxi Cockerell 1908 bulrush
Laurales - Lauraceae	Sassafras columbiana, Persea pseudocarolinensis Sassafras columbiana sassafras Persea pseudocarolinensis Lesquereux 1878 laurel
Polypodiopsida
Equisetales - Equisetidae	Equisetum alexanderi Equisetum alexanderi horsetail