Introduction
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IOWA’S PLACE IN THE DEVONIAN WORLD |
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AN INTRODUCTION TO DEVONIAN FOSSILS OF THE CORALVILLE LAKE AREA |
3 |
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Sponges and Stromatoporoids |
3 |
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The Corals |
4 |
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The Bryozoans |
5 |
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The Brachiopods |
5 |
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The Molluscs |
6 |
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The Echinoderms |
7 |
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Trilobites and Other Arthropods |
8 |
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Miscellaneous Fossils |
8 |
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Microfossils |
9 |
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The Fish |
10 |
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STRATIGRAPHY AND DEPOSITION OF DEVONIAN BEDROCK UNITS
IN THE CORALVILLE LAKE AREA |
11 |
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MIDDLE DEVONIAN WAPSIPINICON GROUP |
12 |
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Pinicion Ridge Formation |
12 |
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Davenport Member |
12 |
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CEDAR VALLEY GROUP |
13 |
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Little Cedar Formation |
13 |
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Solon Member |
15 |
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Rapid Member |
18 |
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Deposition of the Little Cedar Formation |
23 |
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Coralville Formation |
25 |
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Cou Falls Member |
25 |
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Iowa City Member |
26 |
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Deposition of the Coralville Formation |
27 |
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Lithograph City Formation |
27 |
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State Quarry Member |
28 |
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Andalusia Member |
28 |
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Deposition of the Lithograph City Formation |
29 |
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UPPER DEVONIAN LIME CREEK FORMATION |
30 |
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“North Liberty Beds” |
30 |
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STOP 1.
CORALVILLE DAM EMERGENCY SPILLWAY, OVERFLOW CHANNEL: DEVONIAN FOSSIL
GORGE |
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STOP 2A.
MEHAFFEY BRIDGE ROADCUT; MERRILL A. STAINBROOK GEOLOGICAL PRESERVE |
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STOP 2B.
MEHAFFEY BRIDGE SOUTH, CORALVILLE LAKE SHORE – DEVONIAN AND
PENNSYLVANAN CHANNEL-FILL DEPOSITS |
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STOP 3. THE OLD
STATE QUARRY – TYPE SECTION OF THE STATE QUARRY MEMBER |
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STOP 4. SUGAR
BOTTOM AREA – STATE QUARRY MUDSTONES OVER RAPID MEMBER |
61 |
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