ammonites
northeast Deerfield tracksite (Jurassic to of the United States)

Also known as Greenfield, Lull 10

Where: Franklin County, Massachusetts (42.6° N, 72.6° W: paleocoordinates 24.3° N, 18.7° W)

• coordinate estimated from map

• small collection-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; lithology not reported

Size class: macrofossils

Preservation: mold/impression, trace

Collection methods: surface (in situ),

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 91578: authorized by Matt Carrano, entered by Matt Carrano on 02.10.2009