Type Geological formation Country USA | Unit of Newark Group Region North America | |
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Sub-units Deerfield Basin, Turners Falls Sandstone & Mount Toby Formation Other Mudstone, Sandstone, Siltstone, Limestone | ||
The Portland Formation is a geological formation in the northeastern United States. It dates back to the Early Jurassic.
Vertebrate fauna
Dinosaur coprolites located in Massachusetts, USA. Ornithischian tracks located in Massachusetts and Connecticut, USA. Theropod tracks located in Massachusetts and Connecticut, USA. Prosauropod tracks located in Massachusetts and Connecticut, USA.
References
Portland Formation Wikipedia(Text) CC BY-SA