Note 30 — Chapter IV · GEOGRAPHICAL AND GEOLOGICAL DISTRIBUTION

The subjects referred to under this heading are mostly described and figured in detail in Owen’s “Monograph of the Fossil Mammalia of the Mesozoic Formations,” Palæontographical Society’s Publications, 1871; and in various papers by Marsh, in the American Journal of Science and Arts, 1878-89. Important contributions to our knowledge of these forms have also been made by Professors Cope and Osborn, and the reader should especially consult the memoir by the latter writer on the “Structure and Affinities of the Mesozoic Mammals,” published in the Journal of the Philadelphia Academy (1888), vol. ix.