THE%20DEVONIAN

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THE DEVONIAN
Life in the Devonian Sponges with glass skeleton
Hydnoceras left Hindia above
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THE DEVONIAN
Life in the Devonian Sponges and tabulate coral
reefs
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THE DEVONIAN
Life in the Devonian Devonian corals
Rugose Corals
Petoskey Stone Tabulate coral State fossil of
Michigan
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THE DEVONIAN
Life in the Devonian Spiriferid brachiopods
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THE DEVONIAN
Life in the Devonian Goniatite cephalopods
Suture pattern more complex than Nautiloid
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THE DEVONIAN
Life in the Devonian Fish Placoderms expanded
rapidly in Devonian
Dunkleosteus
Arthrodires - carnivorous
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THE DEVONIAN
Life in the Devonian Fish Placoderms expanded
rapidly in Devonian
Antiarchs mud-grubbers Pterichthyoides
above Bothriolepis right
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THE DEVONIAN
Life in the Devonian Fish Chondrichthyan fish
cartilagenous fish
Cladoselache
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THE DEVONIAN
Life in the Devonian Fish Osteichthyan fish
bony or ray-finned fish
Cheirolepis
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THE DEVONIAN
Life in the Devonian Fish Osteichthyan fish
lobe-finned fish Led to tetrapods
Dipterus
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THE DEVONIAN
Life in the Devonian Eurypterids
Eurypterus remipes
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THE DEVONIAN
Aglaophyton left Rhynia center Horneophyton right
Life in the Devonian Plants
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THE DEVONIAN
Life in the Devonian Plants
Lycopsids Pteridophytes (seed ferns) Sphenopsids
(Calamites)
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THE DEVONIAN
Life in the Devonian Plants
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THE DEVONIAN
Life in the Devonian Plants
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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
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THE MISSISSIPPIAN
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THE MISSISSIPPIAN
The Age of Crinoids Acadia highlands
reduced Decrease in muddy sediments Paleozoic
flooding by epeiric seas
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THE MISSISSIPPIAN
The Age of Crinoids
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THE MISSISSIPPIAN
Mississippian Tectonics
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THE MISSISSIPPIAN
Mississippian Tectonics
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THE MISSISSIPPIAN
The Age of Crinoids Acadia highlands
reduced Decrease in muddy sediments Paleozoic
flooding by epeiric seas
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THE MISSISSIPPIAN
The Age of Crinoids Crinoids abundant Ooids
abundant Clear, shallow marine water Salinity
higher than normal Mississippian Lime Bank
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THE MISSISSIPPIAN
The Age of Crinoids Late Mississippian the
Kaskaskia sea retreated
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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
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THE MISSISSIPPIAN
The Age of Crinoids Erosion of Acadian highland
produced Pocono Ss. Forms resistant ridges
of the Pocono Mtns. Forms third clastic
wedge
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THE MISSISSIPPIAN
The Age of Crinoids Erosion of Acadian highland
produced Pocono Ss.
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THE MISSISSIPPIAN
The Age of Crinoids Life in the
Mississippian Rugose corals common
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THE MISSISSIPPIAN
The Age of Crinoids Life in the
Mississippian Archimedes common bryozoan
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THE MISSISSIPPIAN
The Age of Crinoids Life in the
Mississippian Bivalves uncommon Goniatite
cephalopods Graptolites go extinct
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THE MISSISSIPPIAN
The Age of Crinoids Life in the
Mississippian Crinoids abundant
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THE MISSISSIPPIAN
The Age of Crinoids Life in the
Mississippian Insects become abundant Forests
include Seed ferns (Pteridospermae) Lycopsids
Sphenopsids
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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
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THE PENNSYLVANIAN
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THE PENNSYLVANIAN
The Age of Coal Swamps
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THE PENNSYLVANIAN
Orogenic Events Hercynian Orogeny
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THE PENNSYLVANIAN
Orogenic Events Alleghenian Orogeny
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THE PENNSYLVANIAN
The Age of Coal Swamps
Alleghenian Orogeny
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THE PENNSYLVANIAN
Orogenic Events Alleghenian Orogeny Begins
formation of Pangaea Laurentia and Baltica
collide to form LAURASIA Laurasia and Gondwana
collide to form PANGAEA
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THE PENNSYLVANIAN
Orogenic Events Alleghenian Orogeny
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THE PENNSYLVANIAN
Orogenic Events Alleghenian Orogeny