austinh Posted July 10 Share Posted July 10 I am putting a display together for a club show and could use a little help to ID some of the items I hope to include. The display is of Oregon leaves from the Willamette flora, dated 30.1 million years ago. The leaves are from a road cut south of Eugene near Goshen, Oregon. I have found very little written on this formation, I've done my best to ID as much as I can with what I have available and was hoping to put it out to a wider community to both check my work and in the hopes that someone could identify something I could not. If someone is aware of any writing on this formation I would be eager to know that as well. Thanks for the help! 1. Maybe a Quercus, but that's a shot in the dark. 24 cm long 2 Link to comment Share on other sites More sharing options...
austinh Posted July 10 Author Share Posted July 10 2. This one is a real mystery, all the other leaves have well preserved veins, but this one has none. Don't think it's a fruit or see though. 9cm x 7cm 1 Link to comment Share on other sites More sharing options...
austinh Posted July 10 Author Share Posted July 10 3. A partial leaf so maybe not identifiable. My best guess was Populus. It would have been large, this partial is 22cm x 22cm. The center vein of the leaf can be seen on the right side 1 Link to comment Share on other sites More sharing options...
austinh Posted July 10 Author Share Posted July 10 4. This is my favorite. Platanus is what I think it is. Can anyone confirm or deny. Large 40 cm long 2 Link to comment Share on other sites More sharing options...
austinh Posted July 11 Author Share Posted July 11 5. I believe to be Alnus 25cm 6. I'm guessing Castanea 16cm Thank you again! 2 Link to comment Share on other sites More sharing options...
piranha Posted July 11 Share Posted July 11 57 minutes ago, austinh said: 4. This is my favorite. Platanus is what I think it is. Can anyone confirm or deny. Large 40 cm long Congrats on this great collection of leaves! The Willamette species is: Platanus condonii "P. condonii has a limited stratigraphic range and is known only from the lower Oligocene of the Pacific Northwest. It is also present in the Lyons (Meyer, 1973), Rujada (Lakhanpal, 1958), and Willamette floras in western Oregon." Meyer, H.W., Manchester, S.R. 1997 The Oligocene Bridge Creek Flora of the John Day Formation, Oregon. University of California Publications in Geological Sciences, 141:1-195 Link to comment Share on other sites More sharing options...
austinh Posted July 11 Author Share Posted July 11 1 hour ago, piranha said: Congrats on this great collection of leaves! The Willamette species is: Platanus condonii "P. condonii has a limited stratigraphic range and is known only from the lower Oligocene of the Pacific Northwest. It is also present in the Lyons (Meyer, 1973), Rujada (Lakhanpal, 1958), and Willamette floras in western Oregon." Meyer, H.W., Manchester, S.R. 1997 The Oligocene Bridge Creek Flora of the John Day Formation, Oregon. University of California Publications in Geological Sciences, 141:1-195 That's a great start! Thanks so much! Link to comment Share on other sites More sharing options...
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