51/90 I have also listed the recently published text books which give the most authoritative treatment of the dinosaurs, and two or three popular books dealing with fossil vertebrates. Students consulting these authorities should remember that great additions to scientific knowledge of dinosaurs have been made during the last two decades, and much of the new evidence is as yet unpublished or undigested. The views and conclusions presented in this handbook are based upon the study of the American Museum collections as well as upon the authorities cited below. _Palaeobiologie der Wirbelthiere._ Schweitzer-bart'sche Verlagsbuchh., Stuttgart. _Wissenschaftliche Ergebnisse der Tendaguru Expedition._ Archiv.f.Biontologie, iii Bd, i Heft. |