Dexter Marsh's Quarry, Montague (Jurassic to of the United States)

Also known as Montague Canal, Lull 9

Where: Franklin County, Massachusetts (42.5° N, 72.6° W: paleocoordinates 24.2° N, 18.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Portland Formation (Agawam Group), Hettangian to Hettangian (201.3 - 190.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; micaceous, red sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by D. Marsh, E. Hitchcock in 1835-1842

Collection methods: quarrying, surface (in situ), peel or thin section,

Primary reference: E. Hitchcock. 1836. Ornithichnology - description of the foot marks of birds, (Ornithichnites) on new Red Sandstone in Massachusetts. The American Journal of Science and Arts 29(2):307-340 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52993: authorized by Matthew Carrano, entered by Matthew Carrano on 30.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
  -
"Ornithopus loripes n. sp." = Steropoides loripes2, "Tridentipes insignis n. sp." = Steropoides loripes3, "Ornithoidichnites divaricatus n. sp." = Steropoides divaricatus6, "Steropezoum elegans n. sp." = Steropoides elegans2, "Tridentipes ? elegans" = Steropoides elegans5, Steropezoum elegantius2, "Ornithichnites diversus" = Steropoides diversus1
"Ornithopus loripes n. sp." = Steropoides loripes2 Hitchcock 1848 dinosaur
"Tridentipes insignis n. sp." = Steropoides loripes3 Hitchcock 1848 dinosaur
"Ornithoidichnites divaricatus n. sp." = Steropoides divaricatus6 Hitchcock 1837 dinosaur
"Steropezoum elegans n. sp." = Steropoides elegans2 Hitchcock 1841 dinosaur
"Tridentipes ? elegans" = Steropoides elegans5 Hitchcock 1841 dinosaur
Steropezoum elegantius2 Hitchcock 1841 dinosaur
"Ornithichnites diversus" = Steropoides diversus1 Hitchcock 1836 dinosaur
 Saurischia -
"Argozoum paridigitatum" = Argoides minimus5
"Argozoum paridigitatum" = Argoides minimus5 Hitchcock 1836 saurischian
 Saurischia - Sauropodidae
"Anomoepus barrattii" = Sauropus barrattii3
"Anomoepus barrattii" = Sauropus barrattii3 Hitchcock 1837 theropod
 Saurischia -
Anticheiropus pilulatus n. sp.4 Hitchcock 1865 saurischian
Anticheiropus hamatus n. gen. n. sp.4 Hitchcock 1865 saurischian
 Neornithischia - Moyenisauropodidae
"Anomoepus isodactylus" = Anomoepus scambus6
"Anomoepus isodactylus" = Anomoepus scambus6 Hitchcock 1848 bird foot dinosaur