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
Polypodiopsida
Polypodiales - Polypodiidae	Pteris silvicola Pteris silvicola

Coniferales - Cupressaceae	cf. Metasequoia sp. cf. Metasequoia sp. Miki 1941 dawn redwood
Angiospermae
Solanales - Solanaceae	Florissantia speirii Florissantia speirii Manchester 1992 nightshade
Ranunculales - Berberidaceae	Mahonia simplex Mahonia simplex barberry
Proteales - Platanaceae	Platanus exaspera, Platanus sp. Platanus exaspera plane tree Platanus sp. Linnaeus 1753 plane tree
Lamiales - Bignoniaceae	Catalpa sp. Catalpa sp. Scopoli 1777 trumpet vine
Saxifragales - Saxifragaceae	Hydrangea sp. Hydrangea sp. Linnaeus 1753 hydrangea
Saxifragales - Hamamelidaceae	Hamamelidaceae gen. et sp. indet., Fothergilla praeovata Hamamelidaceae gen. et sp. indet. Brown 1818 witch-hazel Fothergilla praeovata witch-hazel
Laurales - Lauraceae	Litseaphyllum presanguinea Litseaphyllum presanguinea Chaney and Sanborn 1933 laurel
Alismatales - Potamogetonaceae	Potamogeton parva, Potamogeton parva n. sp. Potamogeton parva Brown 1940 pondweed Potamogeton parva n. sp. Brown 1940 pondweed
Fabales - Fabaceae	Cercis maurerae, Cladrastis oregonensis Cercis maurerae redbud Cladrastis oregonensis yellowwood
Fagales - Betulaceae	Ostrya oregoniana, Alnus heterodonta, Alnus sp. Ostrya oregoniana hophornbeam Alnus heterodonta alder Alnus sp. Miller 1754 alder
Fagales - Fagaceae	Fagus pacifica, Quercus sp., Quercus berryi, Quercus consimilis Fagus pacifica beech Quercus sp. Linnaeus 1753 oak Quercus berryi Trelease 1918 oak Quercus consimilis Newberry 1883 oak
Fagales - Juglandaceae	Palaeocarya cf. olsonii, Cruciptera sp. Palaeocarya cf. olsonii Cruciptera sp. Manchester 1991
Rosales - Rosaceae	Rubus fremdii, Rubus sp., Rosa sp., Rosa hilliae Rubus fremdii bramble Rubus sp. Linnaeus 1753 bramble Rosa sp. Linnaeus 1753 rose Rosa hilliae Lesquereux 1883 rose
Rosales - Rhamnaceae	Hovenia oregonensis, Paliurus blakei Hovenia oregonensis buckthorn Paliurus blakei buckthorn
Rosales - Pomaceae	Crataegus merriamii, Amelanchier grayi Crataegus merriamii hawthorn Amelanchier grayi shadbush
Rosales - Ulmaceae	Zelkova hesperia, Ulmus sp. 1, Ulmus sp. A, Ulmus sp. B, Ulmus speciosa, Cedrelospermum lineatum Zelkova hesperia zelkova Ulmus sp. 1 Linnaeus 1753 elm Ulmus sp. A Linnaeus 1753 elm Ulmus sp. B Linnaeus 1753 elm Ulmus speciosa Newberry 1883 elm Cedrelospermum lineatum elm
Sapindales - Sapindaceae	Acer osmontii, Acer sp. 1, Acer sp. 2, Acer sp. A, Acer sp. B, Acer manchesteri, Acer glabroides, Acer cranei, Acer oligomedianum 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 manchesteri Wolfe and Tanai 1987 maple Acer glabroides Brown 1937 maple Acer cranei Wolfe and Tanai 1987 maple Acer oligomedianum Wolfe and Tanai 1987 maple
Sapindales - Meliaceae	Cedrela merrillii Cedrela merrillii mahogany
Malvales - Tiliaceae	Tilia circularis, Tilia pedunculata, Tilia lamottei Tilia circularis linden Tilia pedunculata linden Tilia lamottei linden
Vitales - Vitaceae	Vitis sp. Vitis sp. Linnaeus 1753 grapevine
Craigia
-	Craigia oregonensis Craigia oregonensis
Saportaspermum
-	Saportaspermum occidentalis Saportaspermum occidentalis
Plafkeria
-	Plafkeria obliquifolia Plafkeria obliquifolia