STRATA CONTAINING PETRIFACTIONS. 

 SUEVEY 



15 



Of the PalcBontological Formations, or those Strata of the Earth's' 

 Crust coidaining Petrifactions. 



Rod;- Groups. 



V. Quaterncury 

 Group, 

 or 



Anthropolithic 

 (Anthropozoic) 

 groups of strata ^ 



IV. Tertiary 



Group, 



or 



Csenolitliic 



(CEenozoic) 



groups of strata \ 



Systems. 



Formations. 



Siinonifms oj 

 Foriimtions. 



III. Secondary 



Group, 



or 



Mesolithic 



(Mesozoic) 



groups of strata! 



IT. Primary 



Group, 



or 



Palseolithic 



(Paleeozoic) 



groups of strata! 



I. Primordial 



Group, 



or 



Archilithic 



(Archizoic) 



groups of strata \ 



/ 



XIV. Recent 



(Alluvium) 



XIII. Pleistocene 



(Diluvium) 



XII. Pliocene 



(Late tertiai'y) 



XI. Miocene 



(New tertiary) 



X. Eocene 

 (Old tertiary) 



IX. Cretaceous 



VIII. Jura 



VII. Trias 



VI. Permian 



V. Carbonic 

 (coal) 



IV. Devonian 



(Old red sand- 



stone) 



III. Silurian ■ 



II. Cambrian 

 I. Laurentian 



36. Present 

 35. Recent 

 34. Post glacial 

 33. Glacial 



32. Arvemian 

 31. Suh-Appenine 

 30. Falunian 

 29. Liiiiburgian 

 28. Gypsum 

 27. Nummulitic 

 26. London clay 



25. White chalk 

 24. Green sand 

 23. Neocomian 

 22. WeaJden 

 21. Portlandian 

 20. Oxjoidian 

 19. Bath 

 18. Lias 

 17. Keuper 

 16. MuschelJcalk 

 15. Bunter sand 



14. Zechstein 

 13. 



12. Carboniferous 



sandstone 

 11. Carboniferous 



limestone 

 10. Pilton 

 9. Ilfracom,be 

 8. Linton 



7. Ludlow 

 6. Llandovery 

 5. Llandeilo 

 4. Potsdam 

 3. Longmynd 

 2. Labrador 

 1. Ottawa 



Upper alluvial 

 Lower alluvial 

 Upper diluvial 

 Lower diluvial 



Upper pliocene 

 Lower pliocene 

 Upper miocene 

 Lower miocene 

 Upper eocene 

 Mid eocene 

 Lower eocene 



Upper cretaceous 

 Mid cretaceous 

 Lower cretaceons 

 The Kentish Weald 

 Upper oolite 

 Mid oolite 

 Lower oolite 

 Lias formation 

 Upper trias 

 Mid trias 

 Lower trias 



Upper Permian 

 Lower Permian 



Upper carbonic 



Lower carbonic 

 Upper Devonian 

 Mid Devonian 

 Lower Devonian 



Upper Silurian 

 Mid Silm-ian 

 Lower Silurian 

 Upper Cambrian 

 Lower Cambrian 

 Upper Laurentian 

 Lower Laurentian 



