348 Systematic Paleontology 



Thoracosaurus neocwsariensis Cope, 1869, Appendix B, Geol. of New Jer- 

 sey, 1868, p. 736. 

 Thoracosaurus neocwsariensis Cope, 1869, Trans. Amer. Phil. Soc, vol. xiv, 



pp. 68, 79. 

 Thoracosaurus neocwsariensis Cope, 1875, Rept. U. S. Geol. Survey Terr., 



vol. ii, p. 250. 

 Thoracosaurus neocwsariensis Koken, 1888, Zeits. deutsch. geol. Gesell., Bd. 



xl, p. 757. 

 Thoracosaurus neocwsariensis Woodward, 1890, Geol. Mag., dec. Hi, vol. vii, 



p. 393. 

 Thoracosaurus neocwsariensis Zittel, 1890, Handbuch der Palseontologie, Ab. 



i, Bd. Hi, p. 673. 

 Thoracosaurus neocwsariensis Hay, 1902, Bull. U. S. Geol. Survey, No. 179, 



p. 515. 



Description. — This species, the type of the genus, was figured by DeKay 

 as early as 1833, and was rather completely described by Leidy in 1865 

 (op. cit.) from a nearly entire skull found in the Upper Cretaceous of 

 Burlington County, New Jersey. This was compared with the existing 

 Gavial of the Ganges and with European Upper Cretaceous Gavialis 

 macrorhynchus. Leidy estimated the present form to have a skull about 

 3| ft. in length, and he places the entire length of the animal at about 

 20 ft. It was thus one of the largest of the American crocodiles. It is 

 represented in Maryland by the single fragmentary tooth figured. 



Occurrence. — Matawan Formation". Magothy Eiver, Anne Arundel 

 County. 



Collection. — Maryland Geological Survey. 



Thoeacosaueus sp. 

 Plate VIII, Pig. 11 



Description.- — The very much broken procselous vertebra figured is 

 probably referable to this genus and may represent the preceding species. 



Occurrence. — Monmouth Foemation. Near District Line, Prince 

 George's County. 



Collection. — Maryland Geological Survey. 



