1 1 Classylcalton of Rod's. 



oxtciid from North Carolina and Georgia, far up the valley of the Missouri, 

 a-id may possibly reach the British possessions in the west near tlfc Koeky 

 }>touutains. In the chalk, no remains of mammalia have been found, but aii 

 abundance of other fossils such as corals, echin oderms, mollusca, GAi, aud 

 large saurians or lizards. Not fovmd in Canada. 



F. OOMTR. 



The Oolite is thus divided : — IG. Pur beck Beds; 17. Portland Beds ; 

 13. Kimmeridge Clay ; 19. Coral Rag ; 20. Oxford Clay ; 21. Great 

 or Bath Ooliie ; 22. Inferior Oolite. — In the Oolitic seas, swarmed great 

 uumbcrs of moilusca and fish of now extinct species, and Genera, together 

 with the Pterodactyls, Plesiosaurs, Isthyosaurs, and other monsters, descrip- 

 tions of which may be found in many of the common school books of this 

 country : but in addition to these, there existed several species of mammalia,, 

 whose remains have been found in the Stouesfield slate. This fact is justly 

 regarded with much interest by geologists, for the reason that throughout 

 the whole of the cretaceous rocks Ivinii: above the Oolite no mammalian 

 relics have been discovered. The Oolite is not found in Canada. 



G. The Lias. 



2.3. Lias. — Beneath the Oolite is the Lias, with fussils resembling in< 

 general those of the last group, but specifically distinct. Not found ia 

 Canada. 



H. The Trias. 



The Trias is thus divided : — 24. Upper Trias ; 25. Middle Tnas,. 

 or Muschelkalk ; 26. Lower Trias, — The Trias, or New Eed Sandstone 

 formation appears to have been accumulated at a tims when the world 

 swarmed with large Batrachiaiis, or creatures of the frog tribe. From tho/ 

 ?ize of some of the numerous footprints in the sandstone of Europe and the 

 United States, it appears that many of these creatures were as large or even 

 larger tha,n an ox. According to Professor Hitchcock, an eminent ^Inieri- 

 ean Geologist, certain species whose tracks are found in great numbers in 

 the State of Connecticut walked upon two legs like a bird ; between forty and 

 fifty kinds of those tracks have been made out, many of which may have been 

 the impressions of birds. There was at this time, land and laud plants, and 

 in the seas were many large fish, bat the principal characteristic of the age 

 was the abuudaiice of huge frogs aiid saurians which infested the sea shores.. 

 The teeth of a small mammalian has been discovered in a bone breccia in 

 Wurtemberg, in the Trias, and has been called microlcstis antiquus ;: 

 from micros, little ; and testes, a beast of pray. Not found in Canada. 



/. Permian. 



27. The Penr.ian, or Magncsian Limestone. — The formations 



above enumerated from the top of the cretaceous to the bottom of the Triaaalo 



j^oup constitute the Secondary or Mcsozoic rocks, and the Permian is eon- 



Eidercd to form a transition group between them and the Primary or Pal- 



• ccozic rocks^ The upper portion of the Permian belongs to the Secondary, 



• and the lower to the Primary scries. The fossils consist of a few planta. 



