1904] Reviews. 159 



REVIEWS. 



Contributions to Canadian Palaeontology, Vol. III. — On 

 Drvptosaurus incrassatus (Cope), from the Edmonton Series 

 OF THE North-VV^est TERRITORY. Part III., July, 1904. By 

 Lawrence M. Lambe. 



The continuation of the Reports on vertebrate palaeontology 

 of the Geological Survey of Canada is most welcome. Following 

 Part I. by Protessor Cope on the mammals of the Cypress Hills 

 Oligocene beds, and Part II. by Professor Oshorn and Mr. Lambe, 

 chiefly on the reptiles of the Belly River series, Alberta, comes the 

 interesting memoir of Mr. Lawrence M. Lambe on the large car- 

 nivorous Dinosaur of the Upper Cretaceous, Edmonton or Laramie 

 beds. In the meantime Mr. Lambe has received the well earned 

 title of Vertebrate Palceontologist. 



The two skulls described here were found many years ago in 

 the Edmonton series of Alberta, and were identified and described 

 by Professor Cope as specifically identical w'xlh Lcelaps incrassatus 

 which had been found in the somewhat older Judith River beds of 

 Montana. Professor Cope published a brief description without 

 figures, and as we knew little of the cranial characters of the 

 Upper Cretaceous Dinosaurs, Mr. Lambe's full description and 

 figures are of very great interest and value. 



As restored by him the skull in proportions is remarkably 

 similar to that of the small Tuatera lizard of New Zealand en- 

 larged to a massive and formidable scale, that is, the facial region 

 is less elongated than in the carnivorous Jurassic Dinosaurs, 

 which seem to be closely related it not ancestral to thi*^ Upper 

 Cretaceous form. What is lost in length, however, is gained in 

 strength and power, proof that the Upper Cretaceous carnivorous 

 Dinosaurs were thoroughly capable of attacking the huge horned 

 Dinosaurs (the Ceratopsia) ot the same period. These particular 

 specimens are of a somewhat smaller and lighter construction in 

 the feet than others which have been found farther south, and there 

 is evidence of considerable specific if not generic variation among 

 these animals in adaptation to the capture of the many diff'erent 



