Linthicum iron mine, Jessup (Cretaceous of the United States)

Also known as Contee

Where: Howard County, Maryland (39.2° N, 76.7° W: paleocoordinates 33.0° N, 31.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• Palynology of the Potomac Group suggests a late Aptian age for the Arundel facies (Brenner, 1963; Doyle and Robbins, 1977; Hochuli et al., 2006; Doyle, 2012)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; mudstone

Size class: macrofossils

Collected by A. Linthicum, J. B. Hatcher in 1886-1887; reposited in the UNSM

Collection methods: quarrying,

Primary reference: O. C. Marsh. 1888. Notice of a new genus of Sauropoda and other new dinosaurs from the Potomac Formation. American Journal of Science 35:89-94 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 75477: authorized by Matthew Carrano, entered by Matthew Carrano on 11.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauria -
Dinosauria indet.1 dinosaur
"a large femur(?)", given to USGS
 Saurischia -
Pleurocoelus nanus2 Marsh 1888 sauropod
USNM V6093
Pleurocoelus altus n. sp. Marsh 1888 sauropod
USNM V4971