The Sundance Formation is a western North American sequence of Upper Jurassic age[1] marine shales, sandy shales, and sandstones. The formation underlies the western North American Morrison Formation, the most fertile source of dinosaur fossils in the Americas, and is separated by a disconformity from the underlying Upper Triassic Chugwater Formation red beds. The Sundance Formation is known for fossils of an extinct species of marine cephalapod, Belemnites densus.
Vertebrate fauna[]
Pterosaurs[]
Pterosaurs of the Sundance Formation | ||||
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Taxa | Presence | Description | Images | |
Ichnogenus:
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Invertebrate paleofauna[]
Belemnoids[]
Belemnoids of the Sundance Formation | ||||
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Taxa | Presence | Description | Images | |
Genus:
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References[]
- ^ Jennings, Debra S.; Stephen T. Hasiotis (2006). "Taphonomic analysis of a dinosaur feeding site using Geographic Information Systems (GIS), Morrison Formation, Southern Bighorn Basin, Wyoming, USA". Palaios (SEPM Society for Sedimentary Geology) 21 (5): 480–492. doi:10.2110/palo.2005.P05-062R.
- ^ a b c d e f g Lockley, M.; Harris, J.D.; and Mitchell, L. 2008. "A global overview of pterosaur ichnology: tracksite distribution in space and time." Zitteliana. B28. p. 187-198. ISSN 1612 - 4138.