Henson's Bank (Cretaceous of the United States)

Where: Prince George's County, Maryland (39.1° N, 76.9° W: paleocoordinates 32.9° N, 31.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Arundel Clay Formation (Potomac Group), Late/Upper Aptian (122.5 - 113.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: mire or swamp; brown, carbonaceous claystone

• "ashy brown charcoal clay"

Size class: macrofossils

Collected by A. Bibbins in 1894

Primary reference: P. Kranz. 1996. Notes on the sedimentary iron ores of Maryland and their dinosaurian fauna. In D. K. Brezinski & J. P. Reger (ed.), Studies in Maryland Geology in Commemoration of the Centennial of the Maryland Geological Survey. Maryland Geological Survey Special Publication 3:87-111 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 232227: authorized by Matthew Carrano, entered by Matthew Carrano on 02.11.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Theropoda -
"Dryptosaurus medius" = Allosaurus medius
"Dryptosaurus medius" = Allosaurus medius Marsh 1888 tetanuran theropod
USNM V8502, 8504
 Saurischia -
Pleurocoelus sp., Pleurocoelus nanus
Pleurocoelus sp. Marsh 1888 sauropod
USNM PAL 357043–45, 357047–51, 357054-55, 357059, 357063, 357065, 357067, 357069, 357073–76, 357078-79, 357082
Pleurocoelus nanus Marsh 1888 sauropod
USNM V8474–83, 8485–93, 8495–98, 8500-01, 8506, 9153, PAL 357042, 357046, 357050, 357054