Miocene leaf from Korea

[IonRocks]

This leaf has burnt a hole in my brain for years. 
Recently when I looked I found a paper which is either the same location this leaf is from, or a very similar one. https://link.springer.com/article/10.1007/s12303-017-0004-x

It lists species found as:

Equisetum sp. (rhizome) 

Sorbus sp.
Ulmus sp. 

Fagus antipofi Heer 

Pterocarya sp. 

Alnus arasensis Huzioka 

Alnus sp. (infructescence)
Populus sp. 
Salixsp. 
Decodon sp. 
Acer sp. cf. A. nordenskioeldi Nathorts 
Acer sp. cf. A. rotundatum Huzioka 3 Acer sp. (samara) 
“Alangium” aequalifolium (Goeppert) Kryshtofovich et Borsuk

Fraxinus sp.
Dicotylophyllum sp.

Monocotylophyllum sp.

 

 

Unfortunately even with this I am unable to match this leaf! 
Thanks for any help

[turtlesteve]

This reminds me of oaks or stone oaks from Asia.  Maybe look for Quercus or Lithocarpus on the fossil record.  I have two Asian species L. Glaber and Q. Glauca planted in my yard, and both have very similar leaf structure.