Messrs. Clark Quarry, Milford (level A) (Triassic of the United States)

Where: Hunterdon County, New Jersey (40.6° N, 75.1° W: paleocoordinates 15.1° N, 20.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Perkasie Member (Passaic Formation), Norian (228.0 - 208.5 Ma)

• Unit O. Upper part of formation, equivalent to Middle Keuper; about 5100 m above base of Triassic

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; gray shale and gray sandstone

• "the footprints were impressed in gray shale and are preserved as natural casts on the under surface of a gray sandstone 4 to 6 cm. thick...narrow shrinkage cracks"

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by S. Clark, J. Eyerman in 1885-1887; reposited in the MCZ

Collection methods: quarrying, surface (in situ),

• collected by John Eyerman

Primary reference: J. Eyerman. 1886. Footprints on the Triassic sandstone (Jura-Trias) of New Jersey. The American Journal of Science, series 3 31(181):72 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 46621: authorized by Matthew Carrano, entered by Matthew Carrano on 21.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Eubrontidae
Grallator sulcatus n. sp. Baird 1957 theropod
Grallator sulcatus Baird 1957 theropod