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tracksite below Smith's Ferry, Northampton (Jurassic to of the United States)

Also known as Lull 20

Where: Hampshire County, Massachusetts (42.2° N, 72.6° W: paleocoordinates 23.9° N, 18.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Portland Formation (Agawam Group), Hettangian to Hettangian (201.6 - 189.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, micaceous, gray sandstone

• hard, gray micaceous sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected in 1840-1855

Collection methods: surface (in situ), mechanical,

Primary reference: E. Hitchcock. 1848. An attempt to discriminate and describe the animals that made the fossil footmarks of the United States, and especially of New England. Memoirs of the American Academy of Arts and Sciences, new series 3:129-256 [M. Carrano/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 62844: authorized by Matthew Carrano, entered by Matthew Carrano on 28.07.2006

Creative Commons license: CC BY (attribution)