642 SCIENCE PROGRESS 



Herpetosuchus, from the Trias of Elgin, with the description of 

 a new species of the former ; and likewise of considering the 

 affinities of the South African Mesosuc/ms, which it is suggested 

 may not be parasuchian at all. The paper concludes with a 

 discussion of the affinities of the Pseudosuchia as a whole, in 

 the course of which the writer, after alluding to the views of 

 other palaeontologists, expresses himself as follows : 



" There cannot, I think, be the slightest doubt that the 

 Pseudosuchia have close affinities with the dinosaurs, or at 

 least with the Theropoda. ... In fact there seems to me little 

 doubt that the ancestral dinosaur was a pseudosuchian. The 

 skulls of such types as Enparkeria or Ornithosuchus are 

 practically dinosaurian even in detail, and the skulls of the 

 early dinosaurs, such as Anchisaurus, differ less from the skulls 

 of pseudosuchians than do those of the early dinosaurs from 

 many of the later types. And there is nothing in the post- 

 cranial skeleton that is not just what we should expect to find 

 in the dinosaur ancestor. . . . 



"Another group to which the pseudosuchians seem to have 

 affinities ... is the Ornithosauria. In general proportions the 

 pterodactyles differ very greatly, but the form from which they 

 arose must have been very much like that seen in the pseudo- 

 suchians. The pterodactyle and pseudosuchian skull are almost 

 exactly similar in essentials. . . . 



" There is still another group to which some pseudochian 

 has probably been ancestral, namely, the birds." 



Crocodiles of the families Teleosauridce and Geosauridce form 

 the subject of the second half of vol. ii. of the British Museum 

 " Catalogue of the Marine Reptiles of the Oxford Clay," the 

 genera included being Steneosaurus, Mycterosuchus (new), and 

 Metriorhynch us. 



In a communication which did not come under notice when 

 writing the palaeontological review for 1912, Mr. C. W. Gilmore 

 described {Proc. U.S. Nat. Mas. vol. xli. pp. 479 et seq. 191 2) 

 a new generic type of mosasaur, or " sea-serpent," from the 

 Cretaceous of Alabama, remarkable for having teeth of a 

 blunted character adapted for crushing hard substances ; this 

 feature being expressed in the generic name Globidens, to which 

 is added the specific title alabamaensis. About a year later 

 Prof. L. Dollo was enabled to record (Archiv Biol. vol. xxviii. 

 pp. 609-20) the occurrence of a very similar mosasaur in the 

 Maestrict Cretaceous, which he referred to the same genus, 



