142 Cretaceous. 



5,000 feet. They were ^Iso found oii the Thompson, below its junction 

 with the Bonaparte. The thickness on Tatlayoco, .220 miles north- 

 eastward from Skagit vallej' is estimated at 7,000 feet. These rocks 

 are regarded as of the same age as the Shasta Group of California. 



Prof. C. A, White* described, from the Fox Hills and Fort Pierre 

 Group, at Cimarron, New Mexico, CaryopliylUa johannis., C. egeria, 

 Crassatella cimarronensis; from Hilliard Station, U. P. R. P., Wyo- 

 ming, Placunopsis hilUardensis, Neritina incompta; from Coalville, 

 Utah, JSTeritina patelliformis^\SiV. iveherensis; from Monument creek, 

 near Colorado Springs, Paliurus pentangulatus; from the mouth of 

 the Saint Vrains, Northern Colorado, Baroda subelUptica, Pachymya 

 herseyi, Actaeon icoosteri,Actaeoninaprosocheila;?rom. west of Greele3% 

 Colorado, Tancredia coelionoius, Glyciyneris berthoudi and Anchara 

 haydeni; from the Cretaceous, at Salado, Bell County, Texas, Exogyra 

 vdlkeri; from Denuison, Texas, Anchura mudgeana; from Helotes, 

 Bexar County, Texas, Turriiella maimochi; and from the Cretaceous, 

 at the head of Waterpocket Canon, Southern Utah, Cardium trite. 



Hef described, from the Cretaceous, on Fossil Creek,16 iniles west of 

 Greeley, and 6 miles south of Fort Collins, Colorado, Chetetes [?) 

 dimissKs, and Beaumontia [?) solitaria. 



Prof. J. F. WhiteavesJ described, from the Cretaceous rocks of the 

 Sucia Islands, Nautilus suciensis, Ammonites selwynanus, Surcula 

 suciensis, Cerithium laUiericmum, var. suciense, Amauropsis suciensis, 

 Cirsotrema tenuis culptum., Stomatia suciensis^ Cinuliopsis typica, 

 Teredo suciensis, Linearia suciensis, Veniella crassa, Laevicardium 

 suciense, Inoceramus cripsi, var. suciensis; from Vancouver Island, 

 Ptychoceras vancouverense, Opis vancouverensis , Discina vancouver- 

 ensis, Smilotrochus vancouverensis; and from Hornby Island and 

 Nanaimo river, Potamides tenuis, var. nanaimoensis, and Periploma 

 suhorbiculatum. 



In 1880, Prof. C. A. White§ said that the geographical limits of the 

 Laramie Group are not yet fully known, but strata bearing its 

 characteristic invertebrate fossils have been found at various localities 

 within a great area, whose northern limit is within the British Posses- 

 sions, and whose southern limit is not further north than Southern 

 Utah and Northern New Mexico. Its western limit, so far as known, 

 may be stated as approximately upon the meridian of the Wahsatch 



•■■■ 11th Rep. Hayilea's U. S. Geo. Sur. Terr. 



t Bull V. S. Sur., Vol. 5, Ko. 2. 



I Mesozic Foss., Part 2. 



§ Cont. to Pal. No. 4, 12th Rep. U. S, Geo. Sur. Terr. 



