Crooked River: Early/Lower Oligocene, Oregon

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Asterocarpinus perplexans seed/fruit
Paracarpinus chaneyi leaf
Flectorivus microdontos leaf
Diplodipelta reniptera seed/fruit
Pinckneya dilcheri seed/fruit
Unknown dicotyledonous sp.1 leaf
Unknown dicotyledonous sp. 9 leaf
Unknown dicotyledonous sp.12 leaf
Unknown dicotyledonous sp. 19 leaf
Unknown dicotyledonous sp. 21 leaf
Unknown dicotyledonous sp. 22 leaf
Unknown dicotyledonous sp. 23 leaf
Unknown dicotyledonous sp. 26 leaf
Unknown dicotyledonous sp. 27 leaf
Unknown dicotyledonous sp. 30 leaf
Typhoides buzekii leaf
Beckerosperma ovalicarpa seed/fruit
Potanospira fryi seed/fruit
Unknown sp. A seed/fruit
Unknown sp. B seed/fruit
Unknown sp. C seed/fruit
Unknown sp. D seed/fruit
Polypodiopsida - Polypodiales - Pteridaceae
Pteris silvicola leaf
unclassified
Craigia oregonensis seed/fruit
Coniferales - Cupressaceae
cf. Metasequoia sp. multi organs Miki 1941
Angiospermae - Alismatales - Potamogetonaceae
Potamogeton parva leaf Brown 1940
Potamogeton parva n. sp. Brown 1940
Brown 1940
Angiospermae - Laurales - Lauraceae
Litseaphyllum presanguinea leaf (Chaney and Sanborn 1933)
Angiospermae - Proteales - Platanaceae
Platanus exaspera leaf
Platanus sp. seed/fruit Linnaeus 1753
Angiospermae - Ranunculales - Berberidaceae
Mahonia simplex leaf
Angiospermae - Saxifragales - Saxifragaceae
Hydrangea sp. flower Linnaeus 1753
Angiospermae - Saxifragales - Hamamelidaceae
Hamamelidaceae gen. et sp. indet.
Fothergilla praeovata leaf
Angiospermae - Lamiales - Bignoniaceae
Catalpa sp. seed/fruit Scopoli 1777
Angiospermae - Solanales - Solanaceae
Florissantia speirii leaf, seed/fruit Manchester 1992
Angiospermae - Fabales - Fabaceae
Cercis maurerae seed/fruit
Cladrastis oregonensis leaf
Angiospermae - Fagales - Juglandaceae
Palaeocarya cf. olsonii seed/fruit
Cruciptera sp. seed/fruit Manchester 1991
Angiospermae - Fagales - Betulaceae
Alnus heterodonta leaf
Alnus sp. seed/fruit Miller 1754
Ostrya oregoniana leaf, seed/fruit
Angiospermae - Fagales - Fagaceae
Quercus sp. leaf Linnaeus 1753
Quercus consimilis leaf Newberry 1883
Quercus berryi leaf Trelease 1918
Fagus pacifica leaf, seed/fruit
Angiospermae - Rosales - Rosaceae
Rosa sp. seed/fruit Linnaeus 1753
Rosa hilliae leaf Lesquereux 1883
Rubus fremdii leaf
Rubus sp. seed/fruit Linnaeus 1753
Angiospermae - Rosales - Rhamnaceae
Hovenia oregonensis leaf
Paliurus blakei leaf
Angiospermae - Rosales - Pomaceae
Amelanchier grayi leaf
Crataegus merriamii leaf
Angiospermae - Rosales - Ulmaceae
Zelkova hesperia leaf
Cedrelospermum lineatum leaf, seed/fruit
Ulmus sp. 1 leaf Linnaeus 1753
Ulmus sp. A seed/fruit Linnaeus 1753
Ulmus sp. B seed/fruit Linnaeus 1753
Ulmus speciosa leaf Newberry 1883
Angiospermae - Malvales - Tiliaceae
Tilia circularis
Tilia pedunculata
Tilia lamottei leaf
Angiospermae - Sapindales - Meliaceae
Cedrela merrillii leaf, seed/fruit
Angiospermae - Sapindales - Sapindaceae
Acer osmontii leaf, seed/fruit
Acer sp. 1 leaf Linnaeus 1753
Acer sp. 2 leaf Linnaeus 1753
Acer sp. A seed/fruit Linnaeus 1753
Acer sp. B seed/fruit Linnaeus 1753
Acer oligomedianum seed/fruit Wolfe and Tanai 1987
Acer glabroides leaf Brown 1937
Acer manchesteri leaf Wolfe and Tanai 1987
Acer cranei seed/fruit Wolfe and Tanai 1987
Angiospermae - Vitales - Vitaceae
Vitis sp. seed/fruit Linnaeus 1753
unclassified
Plafkeria obliquifolia leaf
Saportaspermum occidentalis seed/fruit
see common names

Geography
Country:United States State/province:Oregon County:Crook
Coordinates: 44.1° North, 120.3° West (view map)
Paleocoordinates:43.8° North, 109.5° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
Key time interval:Early/Lower Oligocene
Age range of interval:33.90000 - 27.82000 m.y. ago
Stratigraphy
Formation:John Day
Stratigraphic resolution:formation
Lithology and environment
Lithology description: tuffaceous shales
Environment:lacustrine indet.
Taphonomy
Modes of preservation:body,mold/impression,original carbon
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:all microfossils,some macrofossils
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Alnus heterodonta is the most abundant species, followed by Quercus berryi.
Metadata
Database number:35237
Authorizer:B. Tiffney, K. Volkman Enterer:J. Fosdick, K. Volkman
Modifier:J. Fosdick Research group:paleobotany
Created:2003-11-19 11:19:08 Last modified:2003-11-19 13:19:08
Access level:database members Released:2004-11-19 11:19:08
Creative Commons license:CC BY
Reference information

Primary reference:
2582. 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]

Secondary references:

83141 R.W. Brown. 1940. New species and changes of name in some American fossil floras. Journal of the Washington Academy of Sciences 30(8):344-356 [K. Volkman/K. Volkman]