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Ashael Lyman's, Northampton tracksite (Jurassic to of the United States)

Also known as Mt. Tom East, Dinosaur Footprint Reservation, Holyoke Footprint Preserve, Lull 19, Mount Tom

Where: Hampden County, Massachusetts (42.3° N, 72.6° W: paleocoordinates 24.0° N, 18.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• basal part of formation

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; gray, red sandstone and mudstone

• shallow lake and playa
• "variegated red and gray flaggy sandstone and mudstone"

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by W. Clark in 1848

Collection methods: quarrying, surface (in situ),

Primary reference: E. Hitchcock. 1836. Ornithichnology - description of the foot marks of birds, (Ornithichnites) on new Red Sandstone in Massachusetts. The American Journal of Science and Arts 29(2):307-340 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 53025: authorized by Matthew Carrano, entered by Matthew Carrano on 01.09.2005

Creative Commons license: CC BY (attribution)