Cedar District Formation Explained

Cedar District Formation
Type:	Formation
Age:	Campanian ~
Period:	Campanian
Namedfor:	Cedar District on Vancouver Island
Region:	British Columbia, Washington (state)
Country:	Canada, United States
Unitof:	Nanaimo Group
Underlies:	Denman/De Courcy Formation
Overlies:	Protection Formation
Area:	Southeastern Vancouver Island, Gulf Islands, San Juan Islands

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.

Paleobiology

Flora

• Suciacarpa starrii^[1]

Fauna

• Baculites rex^[2]
• Baculites anceps^[2]
• Baculites occidentalis^[2]
• Baculites inornatus^[2]
• Anapachydiscus nelchinensis^[2]
• Metaplacenticeras sp.^[2]
• Canadoceras newberryanum^[2]
• Pachydiscus neevesi^[2]
• Hoplitoplacenticeras vancouverense^[2]
• Gaudryceras denmanense^[2]
• Neophylloceras sp.^[2]
• Condonella suciensis ^[3]
• Ornithomimidae indet.^[4]
• Theropoda indet. (possibly Tyrannosauridae)^[4]

See also

• List of fossiliferous stratigraphic units in Washington (state)
• Paleontology in Washington (state)

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.

Notes and References

1. 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 . 10.1139/cjb-2016-0035. free .
2. Ward . P . 1978 . Baculitids from the Santonian-Maestrichtian Nanaimo Group, British Columbia, Canada and Washington State, USA. . Journal of Paleontology . 52 . 5 . 1143–1154 . 1303860.
3. Roth . B. . 2000 . Upper Cretaceous (Campanian) land snails (Gastropoda: Stylommatophora) from Washington and California . Journal of Molluscan Studies . 66 . 3 . 373–381 . 10.1093/mollus/66.3.373. free .
4. Peecook . B. . Sidor . C.. 2015 . The First Dinosaur from Washington State and a Review of Pacific Coast Dinosaurs from North America . PLOS ONE . 10 . 5 . 1–15 . 10.1371/journal.pone.0127792.g001 . free .