Riker Hill Quarry (unit 21) (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: B Member (Towaco Formation), Hettangian (201.3 - 199.3 Ma)

• subunit 21c = part of bed p = Unit g

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; gray, red siltstone and gray sandstone

• "2 or 3 fining-upwards cycles...Lower part of cycle consists of gray and buff cross-bedded sandstone grading upward into fine gray-blue or gray-green siltstone. Uppermost cycle composed of gray sandstones and red siltstones."

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression, trace

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: general faunal/floral analysis

PaleoDB collection 187197: authorized by Matthew Carrano, entered by Matthew Carrano on 17.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
  -
Reptilia indet. Laurenti 1768 reptile
"reptile footprints"
unclassified
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