Gateway to the Paleobiology Database
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)