ammonites
banner
Gateway to the Paleobiology Database
Portland Quarries, tracksite (Jurassic to of the United States)

Also known as Lull 37, brownstone

Where: Middlesex County, Connecticut (41.6° N, 72.6° W: paleocoordinates 23.3° N, 18.6° W)

• coordinate based on nearby landmark

• 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; coarse-grained, gray, red sandstone

• gray and red, coarse micaceous sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected in 1857

Collection methods: salvage, surface (float),

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: taxonomic analysis

PaleoDB collection 91574: authorized by Matthew Carrano, entered by Matthew Carrano on 02.10.2009

Creative Commons license: CC BY (attribution)