Wethersfield tracksite: Hettangian - Sinemurian, Connecticut
collected by Hitchcock, Marsh 1840-1870

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia
Sauroidichnites emmonsii n. sp. Hitchcock 1841
Hitchcock 1841
recombined as Triaenopus emmonsii
later renamed Triaenopus leptodactylus
Sauroidichnites baileyi n. sp. Hitchcock 1841
Hitchcock 1841
synonym of Triaenopus emmonsii
later renamed Triaenopus leptodactylus
Reptilia
Plectropterna sp. Hitchcock 1845
Hitchcock 1865 1 specimen
minitans or gracilis
Plectropterna gracilis Hitchcock 1858
Hitchcock 1865 3 specimens
Plectropterna elegans n. sp. Hitchcock 1889
Hitchcock 1889 3 specimens
Plectropterna lineans Hitchcock 1858
Hitchcock 1865 1 specimen
Plectropterna minitans (Hitchcock 1837)
Hitchcock 1848 15 specimens
Plectropterna ? minitans (Hitchcock 1837)
Hitchcock 1865 2 specimens
Reptilia - Moyenisauropodidae
Corvipes lacertoideus Hitchcock 1858
Lull 1915
recombined as Anomoepus lacertoideus
Anomoepus gracillimus (Hitchcock 1844)
Hitchcock 1865 4 specimens
synonym of Anomoepus scambus
Reptilia - Grallatoridae
Anchisauripus tuberosus (Hitchcock 1836)
Lull 1915
recombined as Grallator tuberosus
Anchisauripus exsertus (Hitchcock 1858)
Lull 1915
synonym of Grallator tuberosus
Grallator tenuis Hitchcock 1858
Lull 1915
Grallator cuneatus Hitchcock 1858
Hitchcock 1865 4 specimens
synonym of Grallator tenuis
Grallator formosus Hitchcock 1858
Hitchcock 1865 1 specimen
synonym of Grallator tenuis
Grallator cursorius Hitchcock 1858
Hitchcock 1858 1 specimen
Eubrontes giganteus (Hitchcock 1836)
Lull 1915
Eubrontes divaricatus (Hitchcock 1865)
Lull 1915
synonym of Eubrontes giganteus
Brontozoum sillimanium (Hitchcock 1843)
Hitchcock 1865 13 specimens
recombined as Eubrontes sillimani
Brontozoum ? sillimanium (Hitchcock 1843)
Hitchcock 1865 1 specimen
recombined as Eubrontes sillimani
Reptilia
Argozoum paridigitatum Hitchcock 1848
Hitchcock 1858 2 specimens
synonym of Argoides minimus
Plesiornis aequalipes n. sp. Hitchcock 1858
Hitchcock 1858 1 specimen
synonym of Argoides minimus
Ornithoidichnites macrodactylus n. sp. Hitchcock 1841
Hitchcock 1841
recombined as Argoides macrodactylus
Argozoum disparidigitatum Hitchcock 1848
Hitchcock 1858 6 specimens
synonym of Argoides macrodactylus
Platypterna tenuis (Hitchcock 1837)
Hitchcock 1865 4 specimens
Ornithoidichnites deanii (Hitchcock 1837)
Hitchcock 1865 10 specimens
recombined as Platypterna deanii
Harpedactylus sp. Hitchcock 1845
Hitchcock 1865 1 specimen
synonym of Platypterna
Sauroidichnites tenuissimus n. sp. Hitchcock 1837
Hitchcock 1848
recombined as Harpedactylus tenuissimus
Reptilia - Batrachopodidae
Macropterna divaricans Hitchcock 1848
Hitchcock 1858
recombined as Palamopus divaricans
Exocampe ornata Hitchcock 1858
Lull 1953
synonym of Batrachopus deweyi
Arachichnus dehiscens Hitchcock 1858
Lull 1953
synonym of Batrachopus deweyi
Palamopus rogersi (Hitchcock 1843)
Lull 1915
synonym of Batrachopus deweyi
Macropterna vulgaris Hitchcock 1858
Hitchcock 1865 9 specimens
synonym of Batrachopus deweyi
Macropterna rhynchosauroidea Hitchcock 1848
Hitchcock 1848
synonym of Batrachopus deweyi
Reptilia
Ornithoidichnites tetradactylus n. sp. (Hitchcock 1836)
recombined as Sillimanius tetradactylus
Ornithopus gallinaceus Hitchcock 1845
Hitchcock 1858 11 specimens
synonym of Sillimanius tetradactylus
Steropoides infelix Hay 1902
Lull 1915
Steropoides diversus (Hitchcock 1836)
Lull 1915
Steropoides divaricatus (Hitchcock 1837)
Lull 1953
Tridentipes insignis Hitchcock 1858
Hitchcock 1858
synonym of Steropoides divaricatus
Ornithopus loripes Hitchcock 1848
Hitchcock 1848
synonym of Steropoides divaricatus
Sauroidichnites heteroclitus Hitchcock 1841
Hitchcock 1865 10 specimens
recombined as Ancyropus heteroclitus
Ichnolites - Dipodichnites
Ornithoidichnites gracillior n. sp.
Hitchcock 1848 8 specimens
see common names

Geography
Country:United States State/province:Connecticut County:Middlesex
Coordinates: 41.7° North, 72.6° West (view map)
Paleocoordinates:23.4° North, 18.6° West
Basis of coordinate:based on nearby landmark
Altitude:0 meters
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Early/Lower Jurassic
10 m.y. bin:Jurassic 1
Key time interval:Hettangian - Sinemurian
Age range of interval:201.40000 - 192.90000 m.y. ago
Stratigraphy
Geological group:Agawam Formation:Portland
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:gray,red "shale"
Secondary lithology:micaceous sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: red and gray 'shale', micaceous sandstone
Environment:fluvial-lacustrine indet.
Taphonomy
Modes of preservation:cast,mold/impression,trace
Degree of concentration:-multiple events
Size of fossils:macrofossils
Spatial orientation:life position
Preservation of anatomical detail:good
Associated major elements:many
Disassociated major elements:many
Temporal resolution:time-averaged
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),field collection,observed (not collected)
Reason for describing collection:taxonomic analysis
Collectors:Hitchcock, Marsh Collection dates:1840s-1870s
Metadata
Also known as:Lull 34, 35
Database number:53023
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-09-01 11:59:52 Last modified:2020-02-14 16:44:08
Access level:the public Released:2005-09-01 11:59:52
Creative Commons license:CC BY
Reference information

Primary reference:
14325.ETE 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]

Secondary references:

30862ETE C. H. Hitchcock. 1865. Appendix [B]. Descriptive catalogue of the specimens in the Hitchcock Ichnological Cabinet of Amherst College. In C. H. Hitchcock (ed.), Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863 43-96 [M. Carrano/M. Carrano/M. Carrano]
30910ETE C. H. Hitchcock. 1889. Recent progress in ichnology. Proceedings of the Boston Society of Natural History 24(8):117-127 [M. Carrano/M. Carrano/M. Carrano]
71713 C. H. Hitchcock and N. M. Grier. 1927. The Hitchcock Lecture upon ichnology, and the Dartmouth College ichnological collection. The American Midland Naturalist 10(7):161-197 [M. Carrano/M. Carrano]
69420 E. Hitchcock. 1841. Final Report on the Geology of Massachusetts xii-831 [M. Carrano/M. Carrano]
30909 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]
29531ETE E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts xii-214 [M. Carrano/M. Carrano/M. Carrano]
15230ETE R. S. Lull. 1904. Fossil footprints of the Jura-Trias of North America. Memoirs of the Boston Society of Natural History 5(11):461-557 [M. Carrano/M. Carrano/M. Carrano]
14628ETE R. S. Lull. 1915. Triassic life of the Connecticut Valley. State of Connecticut State Geological and Natural History Survey Bulletin 24:1-285 [M. Carrano/M. Carrano/M. Carrano]
14321ETE R. S. Lull. 1953. Triassic life of the Connecticut Valley (revised). State of Connecticut State Geological and Natural History Survey Bulletin 81:1-336 [M. Carrano/M. Carrano/M. Carrano]
57410 D. Marsh. 1848. Foosil footprints. The American Journal of Science and Arts, series 2 6:272-274 [M. Carrano/M. Carrano]