| Trenton Group Stratigraphic range: Late Ordovician | |
|---|---|
| Type | Group |
| Underlies | Cincinnati Group and Utica Shale |
| Overlies | Black River Group |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | New York and West Virginia |
| Country | United States |
The Trenton Group is a limestone geologic group in New York.
It preserves fossils dating back to the Ordovician period.
Macrocephalochelys is an extinct genus of turtles in the family Chelydridae. It was first described from a partial skull from the Pliocene found in Ukraine by Piboplichko and Taraschchuk in 1960. It was assigned to the family Chelydridae by R. L. Carroll in 1988 although it had been hypothesised to belong in Chelydridae by Chkhikvadze in 1971.
The Detroit River Group is a geologic group in Michigan and Ohio. It preserves fossils dating back to the Devonian period.
The Rochester Shale is a geologic formation exposed in New York and West Virginia. It preserves fossils dating back to the Silurian period.
The Black River Group is a geologic group in Illinois and West Virginia. It preserves fossils dating back to the Ordovician 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 Genesee Group is a geologic formation in Pennsylvania. It preserves fossils dating back to the Devonian period.
The Helderberg Group is a geologic group in New York. It preserves fossils dating back to the Devonian period.
The Tristates Group is a geologic group in New York. It preserves fossils dating back to the Devonian period.
The Bertie Group is a geologic group in New York. It preserves fossils dating back to the Silurian period.
The Lockport Group is a geologic group in New York. It preserves fossils dating back to the Silurian period.
The Medina Group is a geologic group in New York. It preserves fossils dating back to the Silurian period. The group includes the Whirlpool Sandstone, Power Glen Shale, Devils Hole Sandstone, Grimsby Formation, Thorold Sandstone, Cambria Shale and Kodak Sandstone.
The Salina Group is a geologic group in New York state, USA. It preserves fossils dating back to the Silurian period.
The Naples Group is a geologic group in New York. It preserves fossils dating back to the Devonian period.
The Middlesex Shale is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Rhinestreet Shale is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Oswayo Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Oneonta Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
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