Locality
Yukon-Koyukuk Basin Locality 11553
Description
Leaf: simple (?); symmetrical (?); shape unknown; apex missing, base missing; margin entire; venation apparently pinnate; primary midvein straight or nearly so, moderate; secondary veins very weak, irregular, departing midvein at approximately 40°, initially more or less curved, looped near margin, joining superadjacent secondary vein at irregular angles, poorly differentiated from tertiary veins; tertiary veins weak, very irregular, fusing to form irregular compound intersecondary veins.
Remarks
The assignement to P. boreale is tentative because of the poor preservation of this specimen.