This report deals with 3 fragments of fossil wood from the Eagle quadrangle, upper Yukon River, Alaska, your locality 60ABa322.

Only one of the 3 specimens would be sectioned because of coalification and degradation. The third specimen is Callixylon, a genus of large trees that reproduced by spores but had wood much like the conifers. The genus is widespread in Upper Devonian rocks, occurring in Russia, western and central New York, Oklahoma, Texas. It is also present in the New Albany shale of Indiana and Kentucky, which is thought to transgress the Dev.-Miss. Boundary. Hence, the age is most probably Late Dev., but may also be Early Miss.