Also known as Bridge Creek Flora; Wheeler County High School exposures; U.S.G.S. loc. 9420; UCMP V5636; UCMP PA15
Where: Wheeler County, Oregon (45.0° N, 120.2° W: paleocoordinates 44.7° N, 109.4° W)
• coordinate stated in text
When: Big Basin Member (John Day Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)
• Jacisin and Hopkins (2018) indicate beds are between 32.66Ma and 32.99Ma
• formation-level stratigraphic resolution
Environment/lithology: lacustrine; shale
Size classes: macrofossils, mesofossils
Preservation: mold/impression, adpression, original carbon
Collection methods: bulk,
Primary reference: H. W. Meyer and S. R. Manchester. 1997. The Oligocene Bridge Creek flora of the John Day Formation, Oregon. University of California Publications in Geological Sciences 141:1-195 [J. Alroy/J. Alroy/H. Wang]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 35221: authorized by Bruce Tiffney, entered by Julia Fosdick on 18.11.2003, edited by John Alroy and Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
Craigia | |
unclassified | |
Pinopsida | |
Torreya masonii yew | |
Pinus johndayensis pine
Abies sp. Miller 1754 fir | |
Metasequoia sp. Miki 1941 dawn redwood | |
Angiospermae | |
| |
Mahonia simplex barberry | |
Florissantia speirii Manchester 1992 nightshade | |
Ribes sp. Linnaeus 1753 currant | |
Cercidiphyllum crenatum Brown 1935 katsura | |
Hamamelidaceae gen. et sp. indet. Brown 1818 witch-hazel
Parrotia brevipetiolata Meyer and Manchester 1997 ironwood | |
Hydrangea sp. Linnaeus 1753 hydrangea | |
Fraxinus sp. Linnaeus 1753 ash | |
Catalpa sp. Scopoli 1777 trumpet vine | |
Cornus sp. Linnaeus 1753 dogwood | |
Nymphaeaceae gen. et sp. indet. Salisbury 1805 water lily
Nuphar sp. Smith 1809 water lily | |
"Dicotyledones "sp. 2"" = Dicotyledoneae, "Dicotyledones "sp. 3"" = Dicotyledoneae, "Dicotyledones "sp. 7"" = Dicotyledoneae, "Dicotyledones "sp. 8"" = Dicotyledoneae, "Dicotyledones "sp. 15"" = Dicotyledoneae, "Dicotyledones "sp. 16"" = Dicotyledoneae, "Dicotyledones "sp. 17"" = Dicotyledoneae, "Dicotyledones "sp. 18"" = Dicotyledoneae, "Dicotyledones "sp. 25"" = Dicotyledoneae, "Dicotyledones "sp. 27"" = Dicotyledoneae, "Dicotyledones "sp. 29"" = Dicotyledoneae, "Dicotyledones "sp. 31"" = Dicotyledoneae
| |
Dicotyledoneae | |
Angiospermae | |
Cercis maurerae redbud
"Leguminosae gen. et sp. indet" = Fabaceae Lindley 1836 legume
Cladrastis oregonensis yellowwood
Cladrastis sp. Rafinesque 1824 yellowwood | |
Carya sp. 1 Nuttall 1818 hickory
Carya sp. A Nuttall 1818 hickory
Juglans wheelerensis walnut
Cruciptera sp. Manchester 1991 | |
Hovenia oregonensis buckthorn | |
Ulmus chaneyi elm
Ulmus sp. 2 Linnaeus 1753 elm
Ulmus sp. B Linnaeus 1753 elm
Ulmus speciosa Newberry 1883 elm | |
Crataegus merriamii hawthorn | |
Acer osmontii, Acer ashwillii, Acer "sp. 2", Acer "sp. A", Acer "sp. C", Acer glabroides, Acer cranei
Acer osmontii maple
Acer ashwillii maple
Acer "sp. 2" Linnaeus 1753 maple
Acer "sp. A" Linnaeus 1753 maple
Acer "sp. C" Linnaeus 1753 maple
Acer glabroides Brown 1937 maple
Acer cranei Wolfe and Tanai 1987 maple | |
Rhus sp. Linnaeus 1753 sumac
Rhus lesquereuxii Knowlton and Cockerell 1919 sumac | |
Cedrela merrillii mahogany | |
Tilia circularis linden
Tilia fossilensis linden | |
"Monocotyledones indet." = Monocotyledoneae
| |
Polypodiopsida | |
cf. Polypodium sp. Linnaeus 1753 | |
Cinnamomophyllum | |
Mammalia | |
| |
Amphibia | |
Taricha lindoei n. sp.2
| |
Saportaspermum | |
Plafkeria | |
Juglandiphyllites | |