Mount Toby Formation
Stratigraphic range: Jurassic
Type	Formation
Unit of	Newark Supergroup
Location
Region	Massachusetts
Country	United States

The Mount Toby Formation is a geologic formation in Massachusetts. It preserves fossils dating back to the Jurassic period.

• List of fossiliferous stratigraphic units in Massachusetts
• Paleontology in Massachusetts

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.