H. S. Lull — Life of the Connecticut Trias. 411 



Stegomus longipes Emerson and Loomis 



From the upper series of sandstones (Longmeadow sand- 

 stone), Longmeadow, Mass. 



Suborder Phytosauria Baur 



Family Phytosauridae McGregor 



Rhytidodon (Belodon) validus Marsh 



From the lower series of granitic, coarse sandstones, of 

 Simsbury, Conn. 



Order Dinosauria Owen 



Suborder Theropoda Marsh (Carnivorous Dinosaurs) 



Superfamily Megalosauria Baur 



Family Anchisauridse Marsh 



Anchisaurus (Megadactylus) polyzelus (E. Hitchcock, Jr.) 



From the upper series of sandstones and shales (Longmeadow 

 sandstone), Springfield, Mass. 



Anchisaurus colurus Marsh 



From the upper series, Manchester and East Windsor, Conn. 



Anchisaurus solus Marsh 



From the upper series of Manchester. 



Ammosaurus major Marsh 



From the upper series of Manchester. 



Superfamily Compsognatha Huxley 



Podokesaurus holy oken sis Talbot 



From the upper series (Longmeadow sandstone), South 

 Had ley, Mass. 



These forms may be briefly described as follows : — 

 The Parasuchia were reptiles, more or less lizard-like in 

 form with an outer armor consisting of bony plates which are 

 in part segmentally arranged. They were distinguished from 

 the later crocodiles mainly by the position of the internal nares 

 (nostrils), which were normal and not shifted to the rear by 

 the growth of a secondary bony palate. In the modern 

 crocodiles this is a device to prevent strangling while devour- 

 ing prey under water by bringing the nasal chamber in direct 

 communication with the glottis. The Parasuchia were both 

 aquatic, fish-eating forms and, in the aetosaurs, truly terrestrial 

 reptiles though still doubtless of carnivorous habits. 



