Dinwoody Formation

Dinwoody Formation
Stratigraphic range: Induan, ~
TypeGeological formation
Lithology
PrimaryShale, limestone
Location
RegionIdaho, Montana, Utah, Wyoming
CountryUnited States
Dinwoody Formation (the United States)

The Dinwoody Formation is a geologic formation in the western United States (Idaho, Montana, Utah, Wyoming). It preserves fossils dating back to the Triassic period (Induan stage).[1]

Fossil content

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Molluscs

Cephalopods

Cephalopods of the Dinwoody Formation
Genus Species Location Stratigraphic position Material Notes Images
Xiaohenautilus[2] X. chatelaini A grypoceratid trigonoceratoid

See also

References

  1. ^ Hofmann, Richard; Hautmann, Michael; Bucher, Hugo (2013). "A New paleoecological look at the Dinwoody Formation (Lower Triassic, Western USA): intrinsic versus extrinsic ycontrols on ecosystem recovery after the end-Permian mass extinction" (PDF). Journal of Paleontology. 87 (5): 854–880. Bibcode:2013JPal...87..854H. doi:10.1666/12-153. S2CID 130380562.
  2. ^ Jenks, J. F.; Maekawa, T.; Shigeta, Y.; Ware, D.; Brayard, A.; Bylund, K. G.; Stephen, D. A.; Kittrick, N. (2025). "Early Dienerian ammonoids and nautiloids and a new late Griesbachian ammonoid site from the Dinwoody Formation (Thaynes Group) at Crittenden Springs, Elko County, Nevada" (PDF). New Mexico Museum of Natural History and Science Bulletin. 97: 1–29.


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