The Cedar District Formation is a geologic formation exposed on Vancouver Island, the Gulf Islands of British Columbia and San Juan Islands of Washington (state). It preserves fossils dating back to the Campanian Epoch of the Cretaceous period. It dates to the lower mid-Campanian.[1]
| Cedar District Formation | |
|---|---|
| Stratigraphic range: Campanian ~ | |
| Type | Formation |
| Unit of | Nanaimo Group |
| Underlies | Denman/De Courcy Formation |
| Overlies | Protection Formation |
| Area | Southeastern Vancouver Island, Gulf Islands, San Juan Islands |
| Location | |
| Region | British Columbia, Washington (state) |
| Country | Canada, United States |
| Type section | |
| Named for | Cedar District on Vancouver Island |
Paleobiology
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editFauna
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- Baculites rex[3]
- Baculites anceps[3]
- Baculites occidentalis[3]
- Baculites inornatus[1][3]
- Anapachydiscus nelchinensis[3]
- Metaplacenticeras sp.[3]
- Canadoceras newberryanum[3]
- Pachydiscus neevesi[3]
- Hoplitoplacenticeras vancouverense[1][3]
- Gaudryceras denmanense[3]
- Neophylloceras sp.[3]
- Condonella suciensis [4]
- Ornithomimidae indet.[1]
- Theropoda indet. (possibly Tyrannosauridae)[1]
See also
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References
edit- ^ a b c d e Peecook, B.; Sidor, C. (2015). "The First Dinosaur from Washington State and a Review of Pacific Coast Dinosaurs from North America" (PDF). PLOS ONE. 10 (5): 1–15. doi:10.1371/journal.pone.0127792.g001.
- ^ Atkinson, B. (2016). "Early diverging asterids of the Late Cretaceous: Suciacarpa starrii gen. et sp. nov. and the initial radiation of Cornales". Botany. 94 (9): 759–771. doi:10.1139/cjb-2016-0035.
- ^ a b c d e f g h i j k Ward, P (1978). "Baculitids from the Santonian-Maestrichtian Nanaimo Group, British Columbia, Canada and Washington State, USA". Journal of Paleontology. 52 (5): 1143–1154. JSTOR 1303860.
- ^ Roth, B. (2000). "Upper Cretaceous (Campanian) land snails (Gastropoda: Stylommatophora) from Washington and California". Journal of Molluscan Studies. 66 (3): 373–381. doi:10.1093/mollus/66.3.373.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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