1. THE DEVONIAN Life in the Devonian Sponges with glass skeleton Hydnoceras left Hindia above

2. THE DEVONIAN Life in the Devonian Sponges and tabulate coral reefs

3. THE DEVONIAN Life in the Devonian Devonian corals Rugose Corals Petoskey Stone Tabulate coral State fossil of Michigan

4. THE DEVONIAN Life in the Devonian Spiriferid brachiopods

5. THE DEVONIAN Life in the Devonian Goniatite cephalopods Suture pattern more complex than Nautiloid

6. THE DEVONIAN Life in the Devonian Fish Placoderms expanded rapidly in Devonian Dunkleosteus Arthrodires - carnivorous

7. THE DEVONIAN Life in the Devonian Fish Placoderms expanded rapidly in Devonian Antiarchs – mud-grubbers Pterichthyoides above Bothriolepis right

8. THE DEVONIAN Life in the Devonian Fish Chondrichthyan fish – cartilagenous fish Cladoselache

9. THE DEVONIAN Life in the Devonian Fish Osteichthyan fish – bony or ray-finned fish Cheirolepis

10. THE DEVONIAN Life in the Devonian Fish Osteichthyan fish – lobe-finned fish Led to tetrapods Dipterus

11. THE DEVONIAN Life in the Devonian Eurypterids Eurypterus remipes

12. THE DEVONIAN Life in the Devonian Plants Aglaophyton left Rhynia center Horneophyton right

13. THE DEVONIAN Life in the Devonian Plants Lycopsids Pteridophytes (seed ferns) Sphenopsids (Calamites)

14. THE DEVONIAN Life in the Devonian Plants

15. THE DEVONIAN Life in the Devonian Plants

16. THE MISSISSIPPIAN The Age of Crinoids Mississippian named by Alexander Winchell in 1870 Named for carbonate rocks deposited in the Upper Mississippi River valley Lower Carboniferous in Europe and Canada

17. THE MISSISSIPPIAN

18. The Age of Crinoids Acadia highlands reduced Decrease in muddy sediments Paleozoic flooding by epeiric seas

19. THE MISSISSIPPIAN The Age of Crinoids

20. THE MISSISSIPPIAN Mississippian Tectonics

21. THE MISSISSIPPIAN Mississippian Tectonics

22. THE MISSISSIPPIAN The Age of Crinoids Acadia highlands reduced Decrease in muddy sediments Paleozoic flooding by epeiric seas

23. THE MISSISSIPPIAN The Age of Crinoids Crinoids abundant Ooids abundant Clear, shallow marine water Salinity higher than normal Mississippian Lime Bank

24. THE MISSISSIPPIAN The Age of Crinoids Late Mississippian the Kaskaskia sea retreated

25. THE MISSISSIPPIAN The Age of Crinoids Late Mississippian the Kaskaskia sea retreated Detrital muds and limestones formed. Petroleum reservoirs Nonmarine shales and sandstones from erosion of Acadian highlands

26. THE MISSISSIPPIAN The Age of Crinoids Erosion of Acadian highland produced Pocono Ss. Forms resistant ridges of the Pocono Mtns. Forms third clastic wedge

27. THE MISSISSIPPIAN The Age of Crinoids Erosion of Acadian highland produced Pocono Ss.

28. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Rugose corals common

29. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Archimedes common bryozoan

30. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Bivalves uncommon Goniatite cephalopods Graptolites go extinct

31. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Crinoids abundant

32. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Insects become abundant Forests include Seed ferns (Pteridospermae) Lycopsids Sphenopsids

33. THE PENNSYLVANIAN The Age of Coal Swamps Pennsylvanian named by Henry S. Williams in 1891 Named for coal-bearing rocks deposited in Pennsylvanian Upper Carboniferous in Europe and Canada

34. THE PENNSYLVANIAN

35. The Age of Coal Swamps

36. THE PENNSYLVANIAN Orogenic Events Hercynian Orogeny

37. THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny

38. THE PENNSYLVANIAN The Age of Coal Swamps Alleghenian Orogeny

39. THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny Begins formation of Pangaea Laurentia and Baltica collide to form LAURASIA Laurasia and Gondwana collide to form PANGAEA

40. THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny

41. THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny