PBDB Collection

Crooked River (Oligocene of the United States)

Where: Crook County, Oregon (44.1° N, 120.3° W: paleocoordinates 43.8° N, 109.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: John Day Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lacustrine

• tuffaceous shales

Size class: mesofossils

Preservation: mold/impression, original carbon

Collection methods: bulk,

• Alnus heterodonta is the most abundant species, followed by Quercus berryi.

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 35237: authorized by Bruce Tiffney, entered by Julia Fosdick on 19.11.2003, edited by Karl Volkman

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Asterocarpinus perplexans, Paracarpinus chaneyi, Flectorivus microdontos, Diplodipelta reniptera, Pinckneya dilcheri, Unknown dicotyledonous sp.1, Unknown dicotyledonous sp. 9, Unknown dicotyledonous sp.12, Unknown dicotyledonous sp. 19, Unknown dicotyledonous sp. 21, Unknown dicotyledonous sp. 22, Unknown dicotyledonous sp. 23, Unknown dicotyledonous sp. 26, Unknown dicotyledonous sp. 27, Unknown dicotyledonous sp. 30, Typhoides buzekii, Beckerosperma ovalicarpa, Potanospira fryi, Unknown sp. A, Unknown sp. B, Unknown sp. C, Unknown sp. D Asterocarpinus perplexans Paracarpinus chaneyi Flectorivus microdontos Diplodipelta reniptera Pinckneya dilcheri Unknown dicotyledonous sp.1 Unknown dicotyledonous sp. 9 Unknown dicotyledonous sp.12 Unknown dicotyledonous sp. 19 Unknown dicotyledonous sp. 21 Unknown dicotyledonous sp. 22 Unknown dicotyledonous sp. 23 Unknown dicotyledonous sp. 26 Unknown dicotyledonous sp. 27 Unknown dicotyledonous sp. 30 Typhoides buzekii Beckerosperma ovalicarpa Potanospira fryi Unknown sp. A Unknown sp. B Unknown sp. C Unknown sp. D
Angiospermae
Vitales - Vitaceae	Vitis sp. Vitis sp. Linnaeus 1753 grapevine
Malvales - Tiliaceae	Tilia circularis, Tilia pedunculata, Tilia lamottei Tilia circularis linden Tilia pedunculata linden Tilia lamottei linden
Sapindales - Sapindaceae	Acer osmontii, Acer sp. 1, Acer sp. 2, Acer sp. A, Acer sp. B, Acer oligomedianum, Acer cranei, Acer manchesteri, Acer glabroides Acer osmontii maple Acer sp. 1 Linnaeus 1753 maple Acer sp. 2 Linnaeus 1753 maple Acer sp. A Linnaeus 1753 maple Acer sp. B Linnaeus 1753 maple Acer oligomedianum Wolfe and Tanai 1987 maple Acer cranei Wolfe and Tanai 1987 maple Acer manchesteri Wolfe and Tanai 1987 maple Acer glabroides Brown 1937 maple
Sapindales - Meliaceae	Cedrela merrillii Cedrela merrillii mahogany
Fabales - Fabaceae	Cladrastis oregonensis, Cercis maurerae Cladrastis oregonensis yellowwood Cercis maurerae redbud
Rosales - Pomaceae	Crataegus merriamii, Amelanchier grayi Crataegus merriamii hawthorn Amelanchier grayi shadbush
Rosales - Rosaceae	Rosa sp., Rosa hilliae, Rubus fremdii, Rubus sp. Rosa sp. Linnaeus 1753 rose Rosa hilliae Lesquereux 1883 rose Rubus fremdii bramble Rubus sp. Linnaeus 1753 bramble
Rosales - Rhamnaceae	Hovenia oregonensis, Paliurus blakei Hovenia oregonensis buckthorn Paliurus blakei buckthorn
Rosales - Ulmaceae	Cedrelospermum lineatum, Ulmus sp. 1, Ulmus sp. A, Ulmus sp. B, Ulmus speciosa, Zelkova hesperia Cedrelospermum lineatum elm Ulmus sp. 1 Linnaeus 1753 elm Ulmus sp. A Linnaeus 1753 elm Ulmus sp. B Linnaeus 1753 elm Ulmus speciosa Newberry 1883 elm Zelkova hesperia zelkova
Fagales - Fagaceae	Quercus sp., Quercus consimilis, Quercus berryi, Fagus pacifica Quercus sp. Linnaeus 1753 oak Quercus consimilis Newberry 1883 oak Quercus berryi Trelease 1918 oak Fagus pacifica beech
Fagales - Betulaceae	Ostrya oregoniana, Alnus heterodonta, Alnus sp. Ostrya oregoniana hophornbeam Alnus heterodonta alder Alnus sp. Miller 1754 alder
Fagales - Juglandaceae	Palaeocarya cf. olsonii, Cruciptera sp. Palaeocarya cf. olsonii Cruciptera sp. Manchester 1991
Alismatales - Potamogetonaceae	Potamogeton parva, Potamogeton parva n. sp. Potamogeton parva Brown 1940 pondweed Potamogeton parva n. sp. Brown 1940 pondweed
Proteales - Platanaceae	Platanus exaspera, Platanus sp. Platanus exaspera plane tree Platanus sp. Linnaeus 1753 plane tree
Saxifragales - Hamamelidaceae	Hamamelidaceae gen. et sp. indet., Fothergilla praeovata Hamamelidaceae gen. et sp. indet. Brown 1818 witch-hazel Fothergilla praeovata witch-hazel
Saxifragales - Saxifragaceae	Hydrangea sp. Hydrangea sp. Linnaeus 1753 hydrangea
Lamiales - Bignoniaceae	Catalpa sp. Catalpa sp. Scopoli 1777 trumpet vine
Solanales - Solanaceae	Florissantia speirii Florissantia speirii Manchester 1992 nightshade
Ranunculales - Berberidaceae	Mahonia simplex Mahonia simplex barberry
Laurales - Lauraceae	Litseaphyllum presanguinea Litseaphyllum presanguinea Chaney and Sanborn 1933 laurel

Coniferales - Cupressaceae	cf. Metasequoia sp. cf. Metasequoia sp. Miki 1941 dawn redwood
Craigia
-	Craigia oregonensis Craigia oregonensis
Polypodiopsida
Polypodiales - Polypodiidae	Pteris silvicola Pteris silvicola
Saportaspermum
-	Saportaspermum occidentalis Saportaspermum occidentalis
Plafkeria
-	Plafkeria obliquifolia Plafkeria obliquifolia