Chicopee Falls tracksite (Jurassic to of the United States)

Also known as Chicopee Factories, Lull 25

Where: Hampden County, Massachusetts (42.2° N, 72.6° W: paleocoordinates 23.9° N, 18.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• upper part of lower Portland Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified, black, calcareous shale and lithified, gray sandstone

• "ephemeral lake or playa existing during the regressive aprt of the lake cycles"
• "hard black shale", calcareous; "dark gray, oscillatory rippled sandy mudstone with the footprints"; hard gray, thick-bedded sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by J. Bryant, E. Hitchcock

Collection methods: quarrying,

Primary reference: E. Hitchcock. 1841. Final Report on the Geology of Massachusetts xii-831 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 53028: authorized by Matthew Carrano, entered by Matthew Carrano on 01.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

"Ornithopus gallinaceus" = Sillimanius tetradactylus1
"Ornithopus gallinaceus" = Sillimanius tetradactylus1 Hitchcock 1836 dinosaur
 Saurischia -
"Argozoum disparidigitatum" = Argoides macrodactylus1, "Ornithoidichnites redfieldii n. sp." = Argoides redfieldii2, Plesiornis ? pilulatus2
"Argozoum disparidigitatum" = Argoides macrodactylus1 Hitchcock 1841 saurischian
"Ornithoidichnites redfieldii n. sp." = Argoides redfieldii2 Hitchcock 1844 saurischian
Plesiornis ? pilulatus2 Hitchcock 1858 saurischian
 Saurischia - Sauropodidae
"Sauroidichnites barrattii" = Sauropus barrattii
"Sauroidichnites barrattii" = Sauropus barrattii Hitchcock 1837 theropod
 Saurischia -
"Sauroidichnites longipes" = Plectropus longipes
"Sauroidichnites longipes" = Plectropus longipes Hitchcock 1841 theropod
 Saurischia - Eubrontidae
"Brontozoum giganteum" = Eubrontes giganteus1, "Brontozoum sp." = Grallator (Eubrontes)2, Grallator cuneatus2, Grallator ? cuneatus2, Grallator formosus2, Grallator formosus4, "Anchisauripus sillimani" = Eubrontes sillimani3, "Ornithoidichnites tuberosus" = Anchisauripus tuberosus, Anchisauripus exsertus3
"Brontozoum giganteum" = Eubrontes giganteus1 Hitchcock 1836 theropod
"Brontozoum sp." = Grallator (Eubrontes)2 Hitchcock 1845 theropod
Grallator cuneatus2 Hitchcock 1858 theropod
Grallator ? cuneatus2 Hitchcock 1858 theropod
Grallator formosus2 Hitchcock 1858 theropod
Grallator formosus4 Hitchcock 1858 theropod
"Anchisauripus sillimani" = Eubrontes sillimani3 Hitchcock 1843 theropod
"Ornithoidichnites tuberosus" = Anchisauripus tuberosus Hitchcock 1836 theropod
Anchisauripus exsertus3 Hitchcock 1858 theropod
 Saurischia -
"? Ornithoidichnites tenuis" = Platypterna tenuis
"? Ornithoidichnites tenuis" = Platypterna tenuis Hitchcock 1837 saurischian
 Neornithischia - Moyenisauropodidae
"Brontozoum gracillimum" = Anomoepus scambus1
"Brontozoum gracillimum" = Anomoepus scambus1 Hitchcock 1848 bird foot dinosaur
"Polemarchus gigas n. gen. n. sp." = Polemarchus gigas1, "Sauroidichnites polemarchius n. sp." = Polemarchus gigas3
"Polemarchus gigas n. gen. n. sp." = Polemarchus gigas1 Hitchcock 1845 dinosaur
"Sauroidichnites polemarchius n. sp." = Polemarchus gigas3 Hitchcock 1845 dinosaur
Plectropterna minitans2 Hitchcock 1837 tetrapod