Coniopteris (Birisia ?) grebencaensis Philippova, Birisia ochotica Samylina  


Coniopteris is in the upper part of the frame. Birisia is towards the bottom left.



Grebenka, Yelisseev Locality, Site 11b

Locality Map

Geological Map

Sedimentary Log



This photograph was made in the field. The specimen is in the collection of the Geological Institute, Russian Academy of Sciences, Moscow, Russia. For further details of the context of the collection see Spicer et al. (2002).