Severn Formation Locality A (Cattail Brook) (Cretaceous of the United States)

Also known as Loc. 1 of Brouwers and Hazel 1978, Brightseat

Where: Prince George's County, Maryland (38.9° N, 76.9° W: paleocoordinates 39.8° N, 52.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithology not reported

• "near-shore deposits on the continental shelf"
• none given

Size classes: macrofossils, mesofossils

Collected by R. Johnson, G. Medwick & H. Mendryk; reposited in the USNM

Primary reference: D. B. Weishampel and J. B. Weishampel. 1983. Annotated localities of ornithopod dinosaurs: implications to Mesozoic paleobiogeography. The Mosasaur 1:43-87 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 27562: authorized by John Alroy, entered by John Alroy on 11.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
USNM 336469 (pers. comm. J. R. Horner 1982)
 Theropoda -
"Ornithomimus antiquus" = Coelosaurus antiquus
"Ornithomimus antiquus" = Coelosaurus antiquus Leidy 1865 ornithomimosaur
PU 23503
 Squamata - Mosasauridae
"Mosasaurus maximus" = Mosasaurus hoffmannii
"Mosasaurus maximus" = Mosasaurus hoffmannii Mantell 1829 mosasaur
MAPS A1218a