tracksite below Smith's Ferry, Northampton (Jurassic to of the United States)

Also known as Lull 20

Where: Hampshire County, Massachusetts (42.2° N, 72.6° W: paleocoordinates 23.9° N, 18.7° W)

• coordinate estimated from map

• 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: terrestrial; lithified, micaceous, gray sandstone

• hard, gray micaceous sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected in 1840-1855

Collection methods: surface (in situ), mechanical,

Primary reference: E. Hitchcock. 1848. An attempt to discriminate and describe the animals that made the fossil footmarks of the United States, and especially of New England. Memoirs of the American Academy of Arts and Sciences, new series 3:129-256 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 62844: authorized by Matthew Carrano, entered by Matthew Carrano on 28.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

"Tridentipes insignis" = Steropoides divaricatus, "Palamopus dananus" = Polemarchus dananus
"Tridentipes insignis" = Steropoides divaricatus Hitchcock 1837 reptile
"Palamopus dananus" = Polemarchus dananus Hitchcock 1848 reptile
 Saurischia -
"Platypterna varica" = Platypterna concamerata
"Platypterna varica" = Platypterna concamerata Hitchcock 1848 saurischian
 Saurischia - Grallatoridae
"Brontozoum giganteum" = Eubrontes giganteus, "Brontozoum divaricatum" = Eubrontes giganteus, "Brontozoum approximatum" = Eubrontes giganteus, "Brontozoum minusculum" = Eubrontes minusculus, "Brontozoum ? sillimaniium" = Eubrontes, "Grallator cuneatus" = Grallator tenuis, "Grallator formosus" = Grallator tenuis, "Brontozoum validum" = Grallator tuberosus, "Brontozoum exsertum" = Grallator tuberosus
"Brontozoum giganteum" = Eubrontes giganteus Hitchcock 1836 theropod
"Brontozoum divaricatum" = Eubrontes giganteus Hitchcock 1836 theropod
"Brontozoum approximatum" = Eubrontes giganteus Hitchcock 1836 theropod
"Brontozoum minusculum" = Eubrontes minusculus Hitchcock 1837 theropod
"Brontozoum ? sillimaniium" = Eubrontes theropod
"Grallator cuneatus" = Grallator tenuis Hitchcock 1858 theropod
"Grallator formosus" = Grallator tenuis Hitchcock 1858 theropod
"Brontozoum validum" = Grallator tuberosus Hitchcock 1836 theropod
"Brontozoum exsertum" = Grallator tuberosus Hitchcock 1836 theropod