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Fossil Leaf ID Needed


Paul R.

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It is a really nice fossil but I am not sure of the ID. I have some leafs from Green River Formation like Aleophylus flexifolia but it looks different . There are members who really know this formation so they probably be a long soon . 

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Congrats on the great leaf!  A quick response from Steve Manchester:


Q: Is this Green River specimen Populus tidwellii or perhaps something else?

A: Yes, it looks like either Populus cinnamomoides or Populus tidwelli to me.

 

additional reference:

 

Manchester, S.R., Judd, W.S., Handley, B. 2006

Foliage and Fruits of Early Poplars (Salicaceae: Populus from the Eocene of Utah, Colorado, and Wyoming.

International Journal of Plant Sciences, 167(4):897-908  PDF LINK

  • I found this Informative 4

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