ammonites
Roswell Field's Orchard, Gill (Jurassic to of the United States)

Also known as Lull 6A

Where: Franklin County, Massachusetts (42.6° N, 72.5° W: paleocoordinates 24.3° 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)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; red sandstone and shale

• red sandstone, 'shale'

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by D. Marsh, E. Hitchcock in 1830s-1855

Collection methods: quarrying, surface (in situ), peel or thin section,

Primary reference: E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts. William White, Printer, Boston 1-214 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52987: authorized by Matt Carrano, entered by Matt Carrano on 30.08.2005

Creative Commons license: CC BY (attribution)