Chicopee Falls tracksite: Hettangian - Sinemurian, Massachusetts
collected by J. Bryant, E. Hitchcock

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Sauroidichnites polemarchius n. sp. Hitchcock 1837
Lull 1915
recombined as Polemarchus polemarchius
Polemarchus gigas n. gen., n. sp. Hitchcock 1845
Hitchcock 1848 2 specimens
synonym of Polemarchus polemarchius
Ornithopus gallinaceus Hitchcock 1845
Hitchcock 1848
synonym of Sillimanius tetradactylus
Plectropterna minitans (Hitchcock 1837)
Hitchcock 1865 6 specimens
Sauroidichnites longipes Hitchcock 1841
recombined as Plectropus longipes
Reptilia - Sauropodidae
Sauroidichnites barrattii Hitchcock 1837
recombined as Sauropus barrattii
Reptilia - Grallatoridae
Brontozoum giganteum (Hitchcock 1836)
Hitchcock 1848
recombined as Eubrontes giganteus
Brontozoum sp. Hitchcock 1847
Hitchcock 1865 2 specimens
synonym of Eubrontes
Anchisauripus sillimani (Hitchcock 1843)
Lull 1915
recombined as Eubrontes sillimani
Grallator ? formosus Hitchcock 1858
Hitchcock 1865 1 specimen
    = Grallator formosus Hitchcock 1858
Lull 1953
synonym of Grallator tenuis
Grallator formosus Hitchcock 1858
Hitchcock 1865 1 specimen
synonym of Grallator tenuis
Grallator cuneatus Hitchcock 1858
Hitchcock 1865 1 specimen
synonym of Grallator tenuis
Grallator ? cuneatus Hitchcock 1858
Hitchcock 1865 2 specimens
synonym of Grallator tenuis
Ornithoidichnites tuberosus (Hitchcock 1836)
recombined as Grallator tuberosus
Anchisauripus exsertus (Hitchcock 1858)
Lull 1915
synonym of Grallator tuberosus
Reptilia
Plesiornis ? pilulatus Hitchcock 1858
Hitchcock 1865 2 specimens
? Ornithoidichnites tenuis Hitchcock 1837
recombined as Platypterna tenuis
Ornithoidichnites redfieldii n. sp. Hitchcock 1844
Hitchcock 1865 4 specimens
recombined as Argoides redfieldii
Argozoum disparidigitatum Hitchcock 1848
Hitchcock 1848
synonym of Argoides macrodactylus
Reptilia - Moyenisauropodidae
Brontozoum gracillimum (Hitchcock 1844)
Hitchcock 1848 1 specimen
synonym of Anomoepus scambus
see common names

Geography
Country:United States State/province:Massachusetts County:Hampden
Coordinates: 42.2° North, 72.6° West (view map)
Paleocoordinates:23.9° North, 18.6° West
Basis of coordinate:stated in text
Altitude:52 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
Stratigraphy comments: upper part of lower Portland Fm.
Lithology and environment
Primary lithology:black lithified calcareous "shale"
Secondary lithology:gray lithified sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: "hard black shale", calcareous; "dark gray, oscillatory rippled sandy mudstone with the footprints"; hard gray, thick-bedded sandstone
Environment:lacustrine - small
Glacial or sequence phase:regressive
Geology comments: "ephemeral lake or playa existing during the regressive aprt of the lake cycles"
Taphonomy
Modes of preservation:cast,mold/impression,trace
Size of fossils:macrofossils
Spatial orientation:life position
Preservation of anatomical detail:good
Disassociated major elements:some
Disassociated minor elements:some
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,field collection,observed (not collected)
Reason for describing collection:general faunal/floral analysis
Collectors:J. Bryant, E. Hitchcock
Metadata
Also known as:Chicopee Factories, Lull 25
Database number:53028
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-09-01 13:15:03 Last modified:2023-08-25 15:40:28
Access level:the public Released:2005-09-01 13:15:03
Creative Commons license:CC BY
Reference information

Primary reference:
69420. E. Hitchcock. 1841. Final Report on the Geology of Massachusetts xii-831 [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]
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]
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]
14770ETE P. E. Olsen, J. B. Smith, and M. G. McDonald. 1998. Type material of the type species of the classic theropod footprint genera Eubrontes, Anchisauripus, and Grallator (Early Jurassic, Hartford and Deerfield Basins, Connecticut and Massachusetts, U.S.A.). Journal of Vertebrate Paleontology 18(3):586-601 [M. Carrano/M. Carrano]
9842 R. Owen. 1854. Descriptive catalogue of the Fossil organic remains of Reptilia and Pisces contained in the Museum of the Royal College of Surgeons of England. London 1-184 [M. Carrano/M. Carrano/M. Carrano]