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

 Testudinata -
"Sauroidichnites heteroclitus" = Ancyropus heteroclitus4
"Sauroidichnites heteroclitus" = Ancyropus heteroclitus4 Hitchcock 1841 turtle
"Ornithoidichnites tetradactylus n. sp." = Sillimanius tetradactylus, "Ornithopus gallinaceus" = Sillimanius tetradactylus3, "Ornithopus loripes" = Steropoides loripes2, "Tridentipes insignis" = Steropoides loripes3, Steropoides diversus6, Steropoides infelix6
"Ornithoidichnites tetradactylus n. sp." = Sillimanius tetradactylus Hitchcock 1836 dinosaur
"Ornithopus gallinaceus" = Sillimanius tetradactylus3 Hitchcock 1836 dinosaur
"Ornithopus loripes" = Steropoides loripes2 Hitchcock 1848 dinosaur
"Tridentipes insignis" = Steropoides loripes3 Hitchcock 1848 dinosaur
Steropoides diversus6 Hitchcock 1836 dinosaur
Steropoides infelix6 Hay 1902 dinosaur
 Saurischia -
"Ornithoidichnites macrodactylus n. sp." = Argoides macrodactylus1, "Argozoum disparidigitatum" = Argoides macrodactylus3, "Argozoum paridigitatum" = Argoides minimus3, "Plesiornis aequalipes n. sp." = Argoides minimus3
"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
 Saurischia - Eubrontidae
Eubrontes giganteus6 Hitchcock 1836 theropod
Grallator cuneatus4 Hitchcock 1858 theropod
Grallator formosus4 Hitchcock 1858 theropod
Grallator tenuis6 Hitchcock 1858 theropod
"Brontozoum sillimanium" = Eubrontes sillimani4 Hitchcock 1843 theropod
"Brontozoum ? sillimanium" = Eubrontes sillimani4 Hitchcock 1843 theropod
"Eubrontes divaricatus" = Grallator (Eubrontes) divaricatus6 Hitchcock 1865 theropod
"Grallator cursorius" = Eubrontes cursorius3 Hitchcock 1858 theropod
Anchisauripus tuberosus6 Hitchcock 1836 theropod
Anchisauripus exsertus6 Hitchcock 1858 theropod
 Saurischia -
"Ornithoidichnites deanii" = Platypterna deanii4, Platypterna tenuis4
"Ornithoidichnites deanii" = Platypterna deanii4 Hitchcock 1837 saurischian
Platypterna tenuis4 Hitchcock 1837 saurischian
 Neornithischia - Anomoepodidae
Corvipes lacertoideus6 Hitchcock 1858 bird foot dinosaur
 Neornithischia - Moyenisauropodidae
"Anomoepus gracillimus" = Anomoepus scambus4
"Anomoepus gracillimus" = Anomoepus scambus4 Hitchcock 1848 bird foot dinosaur
Harpedactylus sp.4, "Sauroidichnites tenuissimus n. sp." = Harpedactylus tenuissimus2, "Plectropterna elegans n. sp." = Tarsoplectrus elegans5
Harpedactylus sp.4 Hitchcock 1845 dinosaur
"Sauroidichnites tenuissimus n. sp." = Harpedactylus tenuissimus2 Hitchcock 1837 dinosaur
"Plectropterna elegans n. sp." = Tarsoplectrus elegans5 Hitchcock 1889 dinosaur
 Pseudosuchia - Batrachopodidae
"Macropterna divaricans" = Palamopus divaricans3, "Exocampe ornata" = Batrachopus deweyi7, "Arachichnus dehiscens" = Batrachopus deweyi7, "Palamopus rogersi" = Batrachopus deweyi6, "Macropterna rhynchosauroidea" = Batrachopus deweyi2, "Macropterna vulgaris" = Batrachopus deweyi4
"Macropterna divaricans" = Palamopus divaricans3 Hitchcock 1848 archosaur
"Exocampe ornata" = Batrachopus deweyi7 Hitchcock 1843 archosaur
"Arachichnus dehiscens" = Batrachopus deweyi7 Hitchcock 1843 archosaur
"Palamopus rogersi" = Batrachopus deweyi6 Hitchcock 1843 archosaur
"Macropterna rhynchosauroidea" = Batrachopus deweyi2 Hitchcock 1843 archosaur
"Macropterna vulgaris" = Batrachopus deweyi4 Hitchcock 1843 archosaur
"Sauroidichnites baileyi n. sp." = Triaenopus baileyanus1, "Sauroidichnites emmonsii n. sp." = Triaenopus baileyanus1
"Sauroidichnites baileyi n. sp." = Triaenopus baileyanus1 Hitchcock 1841 reptile
later renamed Triaenopus leptodactylus
"Sauroidichnites emmonsii n. sp." = Triaenopus baileyanus1 Hitchcock 1841 reptile
later renamed Triaenopus leptodactylus
Plectropterna sp.4 Hitchcock 1845 tetrapod
minitans or gracilis
Plectropterna minitans2 Hitchcock 1837 tetrapod
Plectropterna ? minitans4 Hitchcock 1837 tetrapod
Plectropterna lineans4 Hitchcock 1858 tetrapod
Plectropterna gracilis4 Hitchcock 1858 tetrapod
 Dipodichnites -
Ornithoidichnites gracillior n. sp.2, "Steropoides divaricatus" = Ornithoidichnites divaricatus7
"Steropoides divaricatus" = Ornithoidichnites divaricatus7 Hitchcock 1837