Riker Hill Quarry (unit 16) (Jurassic of the United States)

Also known as Roseland Quarry, Riker Hill Fossil Site, Walter Kidde Dinosaur Park

Where: Essex County, New Jersey (40.8° N, 74.3° W: paleocoordinates 21.4° N, 20.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: A Member (Towaco Formation), Hettangian (201.3 - 199.3 Ma)

• unit 6 = bed l (L) = Unit e

• bed-level stratigraphic resolution

Environment/lithology: lacustrine - small; gray siltstone and sandstone

• Playas and shallow lakes
• "Gray fining-upward cycle consisting of a lower, cross-bedded sandstone...grading upwards into a fine, well-bedded siltstone, locally rippled with numerous reptile footprints."

Size class: macrofossils

Preservation: trace

Reposited in the YPM

Collection methods: quarrying, surface (in situ),

Primary reference: P. E. Olsen. 1980. The latest Triassic and early Jurassic formations of the Newark Basin (eastern North America): stratigraphy, structure, & correlation. The Bulletin of the New Jersey Academy of Science 25(2):25-51 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187194: authorized by Matthew Carrano, entered by Matthew Carrano on 17.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauria -