Also known as Marshalltown Formation (St Georges) fauna

Where: New Castle County, Delaware (39.6° N, 75.7° W: paleocoordinates 39.0° N, 45.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Marshalltown Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• Underlain by Englishtown Formation (burrowed quartz sand), and overlain by Mount Laurel Sand (burrowed quartz sand) - collection 35049.

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, burrowed, glauconitic, shelly/skeletal, brown, silty, carbonaceous sandstone

Size class: macrofossils

Preservation: mold/impression, replaced with calcite, replaced with phosphate

Reposited in the AMNH, UNSM

Collection methods: salvage, quarrying,

• Collections by local amateur paleontology organisationsl collections from spoil heaps along canal west of Saint Georges, DE

Primary reference: W. J. Kennedy and W.A. Cobban. 1997. Upper Campanian (Upper Cretaceous) ammonites from the Marshalltown Formation-Mount Laurel boundary beds in Delaware. Journal of Paleontology 71(1):62-73 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35048: authorized by Austin Hendy, entered by Austin Hendy on 28.10.2003

Creative Commons license: CC BY (attribution)