Indian Head Highway mosasaur (Cretaceous of the United States)

Where: Prince Georges County, Maryland (38.8° N, 77.0° W: paleocoordinates 39.7° N, 52.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Severn Formation, Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, glauconitic sandstone

Size class: macrofossils

Collected by P. M. Kranz in 1989; reposited in the USNM

Primary reference: R. B. Holmes and H.-D. Sues. 2000. A partial skeleton of the basal mosasaur Halisaurus platyspondylus from the Severn Formation (Upper Cretaceous: Maastrichtian) of Maryland. Journal of Paleontology 74(2):309-316 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 99439: authorized by Matthew Carrano, entered by Hallie Street on 11.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
Halisaurus platyspondylus Marsh 1869 mosasaur
USNM 442450