Prince William tracksite (Triassic of the United States)

Also known as Manassas

Where: Prince William County, Virginia (38.8° N, 77.5° W: paleocoordinates 13.1° N, 21.8° W)

• coordinate estimated from map

When: Poolesville Member (Manassas Sandstone Formation), Norian (228.0 - 208.5 Ma)

• The site lies in the upper 1/3rd of the early Norian Poolesville Member

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; micaceous, gray, red, silty shale and massive, red sandstone

• The Poolesville strata are consistent with deposition along floodplains bordering a sand-dominated fluvial system.
• The Poolesville consists of shallowly westward dipping, micaceous, red or grey shales; red, parallel-bedded, silty shales with local ripple-drift cross lamination; and massively-bedded, to variably trough cross-bedded, dusky-red, fine to coarse-grained arkosic sandstone. Conglomeratic lithologies were not recognized.

Size class: macrofossils

Preservation: trace

Collection methods: surface (in situ),

Primary reference: G. Christe and R. E. Weems. 2004. A new Upper Triassic dinosaur & reptile track site, Culpeper Basin, Prince William County, Virginia. Geological Society of America Abstracts with Programs 36(2):96 [M. Uhen/M. Shalap/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 105551: authorized by Mark Uhen, entered by Margaret Shalap on 22.02.2011, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Cycadeophyta indet.
Gnathostomata
  -
Osteichthyes indet.
Osteichthyes indet. bony fish
"fish fossils"
Reptilia
 Ornithischia -
Gregaripus sp.
Gregaripus sp. Weems 1987 ornithischian
 Theropoda - Grallatoridae
Grallator sp.
Grallator sp. Hitchcock 1858 theropod
 Theropoda -
Kayentapus minor
Kayentapus minor Hitchcock 1858 theropod