Also known as Bridge Creek Flora
Where: Grant County, Oregon (44.6° N, 119.6° W: paleocoordinates 44.3° N, 108.8° W)
• coordinate stated in text
• local area-level geographic resolution
When: Big Basin Member (John Day Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)
• formation-level stratigraphic resolution
Environment/lithology: lacustrine; lithology not reported
Size class: mesofossils
Preservation: mold/impression, original carbon
Collection methods: bulk,
• Collection includes Calocedrus and Pterocarya as unique taxa.
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 35269: authorized by Bruce Tiffney, entered by Julia Fosdick on 21.11.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cinnamomophyllum | |
Craigia | |
Angiospermae | |
Cercidiphyllum crenatum Brown 1935 katsura | |
Cornus sp. Linnaeus 1753 dogwood | |
Platanus condonii plane tree | |
Tilia circularis linden | |
Acer ashwillii maple
Acer sp. A Linnaeus 1753 maple | |
Pterocarya sp. Kunth 1824 wingnut
Pterocarya occidentalis wingnut | |
Alnus heterodonta alder | |
Quercus consimilis Newberry 1883 oak
Fagus pacifica beech | |
cf. Malus sp. Miller 1758
Crataegus merriamii hawthorn | |
Nuphar sp. Smith 1809 water lily | |
Pinopsida | |
Pinus johndayensis pine | |
Torreya masonii yew | |
Metasequoia sp. Miki 1941 dawn redwood
Calocedrus schornii cypress |