Jennings Formation | |
---|---|
Stratigraphic range: Devonian | |
Type | Formation |
Location | |
Region | Maryland |
Country | United States |
The Jennings Formation is a geologic formation in Maryland. [1] It preserves fossils dating back to the Devonian period.
The Lucas Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Rogers City Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Silica Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Alpena Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Gravel Point Formation is a geologic formation in western Michigan. It preserves fossils dating back to the middle Devonian period and correlates with the Long Lake Limestone and Alpena Limestone.
The Norway Point Formation is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.
The Thunder Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Sylvania Sandstone is a geologic formation in Ohio and Michigan. Its type locality is Sylvania, Ohio. It preserves fossils dating back to the Devonian period.
The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.
The Dundee Limestone is a geologic formation in Michigan, Ohio and Ontario. It preserves fossils dating back to the Devonian period.
The St. Laurent Formation is a geologic formation in Illinois. It preserves fossils dating back to the Devonian period.
The Sonyea Group is a geologic group in the northern part of the Appalachian Basin. It preserves fossils dating back to the Devonian period.
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period. The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.
The Dyer Formation is a geologic formation in Colorado. It preserves fossils dating back to the Devonian period.
The Ouray Formation is a geologic formation in Colorado. It preserves fossils dating back to the Devonian period.
The Amherstburg Formation is a geologic formation in Ontario, Canada and Michigan, United States. It preserves fossils dating back to the Devonian period.
The Garden Island Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Squaw Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period. The ammonoid Koenenites has been found in this formation.
The Ellsworth Shale is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.