The early history of the Sciuridae is not well known, squirrels being generally poorly represented in the Tertiary fossil record. A nearly complete skeleton, recently discovered in early Oligocene ...
Some years issued in multiple parts (e.g. [vol. 1] issued in 5 parts. Vol. 4 not published. Contents I. Fossil vertebrates. pt. I. Contributions to the extinct vertebrate fauna of the western ...
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