Portland Formation

Portland Formation
Stratigraphic range: Early Jurassic
Type Geological formation
Unit of Newark Group
Sub-units Deerfield Basin, Turners Falls Sandstone & Mount Toby Formation
Lithology
Other Mudstone, Sandstone, Siltstone, Limestone
Location
Region North America
Country  USA

The Portland Formation is a geological formation in the northeastern United States. It dates back to the Early Jurassic.[1]

Vertebrate fauna

Dinosaur coprolites located in Massachusetts, USA.[1] Ornithischian tracks located in Massachusetts and Connecticut, USA.[1] Theropod tracks located in Massachusetts and Connecticut, USA.[1] Prosauropod tracks located in Massachusetts and Connecticut, USA.[1]

Dinosaurs reported from the Portland Formation
Genus Species Location Stratigraphic position Material Notes Images

Ammosaurus[1]

A. major[1]

  • Connecticut[1]

Anchisaurus[1]

A. polyzelus[1]

  • Connecticut[1]
  • Massachusetts[1]

"Nearly complete skull and skeleton, fragmentary skeleton, adult."[2]

A. solus[1]

  • Connecticut[1]

Podokesaurus[1]

P. holyokensis

  • Connecticut[1]

Partial postcranial skeleton.[3]

All known remains of this species have been destroyed.

See also

Footnotes

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Jurassic, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 530–532. ISBN 0-520-24209-2.
  2. "Table 12.1," in Weishampel, et al. (2004). Page 234.
  3. "Table 3.1," in Weishampel, et al. (2004). Page 48.

References

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