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INDEX
V
- Vandalia Till Member
- Vergennes Sandstone Member
- Vermilionville Sandstone Member
- Victory Member
- Vienna Limestone
- Virgilian Series
W
W cont.
W cont.
- Winnebago Formation
- Winslow Till Member
- Wise Lake Formation
- Wise Ridge Coal Member
- Witt Coal Member
- Wolf Creek Formation
- Womac Coal Member
- Woodbury Limestone Member
- Wyota Member
Y