Wethersfield tracksite (Jurassic to of the United States)

Also known as Lull 34, 35

Where: Middlesex County, Connecticut (41.7° N, 72.6° W: paleocoordinates 23.4° N, 18.6° 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; gray, red shale and micaceous sandstone

• red and gray 'shale', micaceous sandstone

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected by Hitchcock, Marsh in the 1840s-1870s

Collection methods: quarrying, surface (in situ),

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 53023: authorized by Matthew Carrano, entered by Matthew Carrano on 01.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Amphibia
 Labyrinthodontia -
"Sauroidichnites emmonsii n. sp." = Triaenopus emmonsii1, "Sauroidichnites baileyi n. sp." = Triaenopus emmonsii1
"Sauroidichnites emmonsii n. sp." = Triaenopus emmonsii1 Hitchcock 1841 tetrapod
later renamed Triaenopus leptodactylus
"Sauroidichnites baileyi n. sp." = Triaenopus emmonsii1 Hitchcock 1841 tetrapod
later renamed Triaenopus leptodactylus
Reptilia
  -
Steropoides diversus6, "Steropoides divaricatus" = Steropoides divaricatus7, "Tridentipes insignis" = Steropoides divaricatus3, "Ornithopus loripes" = Steropoides divaricatus2, Steropoides infelix6, "Ornithoidichnites tetradactylus n. sp." = Sillimanius tetradactylus, "Ornithopus gallinaceus" = Sillimanius tetradactylus3, Plectropterna sp.4, Plectropterna gracilis4, Plectropterna elegans n. sp.5, Plectropterna minitans2, Plectropterna ? minitans4, Plectropterna lineans4
Steropoides diversus6 Hitchcock 1836 reptile
"Steropoides divaricatus" = Steropoides divaricatus7 Hitchcock 1837 reptile
"Tridentipes insignis" = Steropoides divaricatus3 Hitchcock 1837 reptile
"Ornithopus loripes" = Steropoides divaricatus2 Hitchcock 1837 reptile
Steropoides infelix6 Hay 1902 reptile
"Ornithoidichnites tetradactylus n. sp." = Sillimanius tetradactylus Hitchcock 1836 reptile
"Ornithopus gallinaceus" = Sillimanius tetradactylus3 Hitchcock 1836 reptile
Plectropterna sp.4 Hitchcock 1845 dinosaur
minitans or gracilis
Plectropterna gracilis4 Hitchcock 1858 dinosaur
Plectropterna elegans n. sp.5 Hitchcock 1889 dinosaur
Plectropterna minitans2 Hitchcock 1837 dinosaur
Plectropterna ? minitans4 Hitchcock 1837 dinosaur
Plectropterna lineans4 Hitchcock 1858 dinosaur
 Theropoda - Grallatoridae
"Eubrontes giganteus" = Eubrontes giganteus6, "Eubrontes divaricatus" = Eubrontes giganteus6, "Brontozoum sillimanium" = Eubrontes sillimani4, "Brontozoum ? sillimanium" = Eubrontes sillimani4, Grallator cursorius3, "Grallator tenuis" = Grallator tenuis6, "Grallator formosus" = Grallator tenuis4, "Grallator cuneatus" = Grallator tenuis4, "Anchisauripus tuberosus" = Grallator tuberosus6, "Anchisauripus exsertus" = Grallator tuberosus6
"Eubrontes giganteus" = Eubrontes giganteus6 Hitchcock 1836 theropod
"Eubrontes divaricatus" = Eubrontes giganteus6 Hitchcock 1836 theropod
"Brontozoum sillimanium" = Eubrontes sillimani4 Hitchcock 1843 theropod
"Brontozoum ? sillimanium" = Eubrontes sillimani4 Hitchcock 1843 theropod
Grallator cursorius3 Hitchcock 1858 theropod
"Grallator tenuis" = Grallator tenuis6 Hitchcock 1858 theropod
"Grallator formosus" = Grallator tenuis4 Hitchcock 1858 theropod
"Grallator cuneatus" = Grallator tenuis4 Hitchcock 1858 theropod
"Anchisauripus tuberosus" = Grallator tuberosus6 Hitchcock 1836 theropod
"Anchisauripus exsertus" = Grallator tuberosus6 Hitchcock 1836 theropod
 Saurischia -
"Ornithoidichnites deanii" = Platypterna deanii4, Platypterna tenuis4, "Harpedactylus sp." = Platypterna4, "Sauroidichnites tenuissimus n. sp." = Harpedactylus tenuissimus2, "Ornithoidichnites macrodactylus n. sp." = Argoides macrodactylus1, "Argozoum disparidigitatum" = Argoides macrodactylus3, "Argozoum paridigitatum" = Argoides minimus3, "Plesiornis aequalipes n. sp." = Argoides minimus3
"Ornithoidichnites deanii" = Platypterna deanii4 Hitchcock 1837 saurischian
Platypterna tenuis4 Hitchcock 1837 saurischian
"Harpedactylus sp." = Platypterna4 Hitchcock 1845 saurischian
"Sauroidichnites tenuissimus n. sp." = Harpedactylus tenuissimus2 Hitchcock 1837 saurischian
"Ornithoidichnites macrodactylus n. sp." = Argoides macrodactylus1 Hitchcock 1841 saurischian
"Argozoum disparidigitatum" = Argoides macrodactylus3 Hitchcock 1841 saurischian
"Argozoum paridigitatum" = Argoides minimus3 Hitchcock 1836 saurischian
"Plesiornis aequalipes n. sp." = Argoides minimus3 Hitchcock 1836 saurischian
 Ornithischia - Moyenisauropodidae
"Anomoepus gracillimus" = Anomoepus scambus4, "Corvipes lacertoideus" = Anomoepus lacertoideus6
"Anomoepus gracillimus" = Anomoepus scambus4 Hitchcock 1848 ornithopod
"Corvipes lacertoideus" = Anomoepus lacertoideus6 Hitchcock 1858 ornithopod
 Pseudosuchia - Batrachopodidae
"Arachichnus dehiscens" = Batrachopus deweyi7, "Palamopus rogersi" = Batrachopus deweyi6, "Macropterna vulgaris" = Batrachopus deweyi4, "Macropterna rhynchosauroidea" = Batrachopus deweyi2, "Exocampe ornata" = Batrachopus deweyi7, "Macropterna divaricans" = Palamopus divaricans3
"Arachichnus dehiscens" = Batrachopus deweyi7 Hitchcock 1843 aetosaur
"Palamopus rogersi" = Batrachopus deweyi6 Hitchcock 1843 aetosaur
"Macropterna vulgaris" = Batrachopus deweyi4 Hitchcock 1843 aetosaur
"Macropterna rhynchosauroidea" = Batrachopus deweyi2 Hitchcock 1843 aetosaur
"Exocampe ornata" = Batrachopus deweyi7 Hitchcock 1843 aetosaur
"Macropterna divaricans" = Palamopus divaricans3 Hitchcock 1848 aetosaur
 Testudinata -
"Sauroidichnites heteroclitus" = Ancyropus heteroclitus4
"Sauroidichnites heteroclitus" = Ancyropus heteroclitus4 Hitchcock 1841 turtle
Ichnolites
 Dipodichnites -
Ornithoidichnites gracillior n. sp.2
1Hitchcock 1841; 2Hitchcock 1848; 3Hitchcock 1858; 4Hitchcock 1865; 5Hitchcock 1889; 6Lull 1915; 7Lull 1953