Nicely Formation

Nicely Formation
Stratigraphic range: late Pliensbachian ~186–183  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Mudstone, limestone
Other	Shale, siltstone
Location
Coordinates	44°06′N119°24′W / 44.1°N 119.4°W / 44.1; -119.4
Approximate paleocoordinates	28°24′N56°06′W / 28.4°N 56.1°W / 28.4; -56.1
Region	Crook, Grant & Harney Counties, Oregon
Country	United States
Extent	Snake River Basin
Nicely Formation (the United States) Show map of the United States Nicely Formation (Oregon) Show map of Oregon

The Nicely Formation is a geologic formation in the Crook, Grant, and Harney Counties in Oregon. It preserves radiolaria and ichthyosaur fossils dating back to the Pliensbachian stage of the Early Jurassic period. ^[1]

Fossil content

Among others, the following fossils have been reported from the formation: ^[1]

• Ichthyosauria indet. ^[2]

See also

• List of fossiliferous stratigraphic units in Oregon
• Paleontology in Oregon

References

1. Nicely Formation at Fossilworks.org
2. Orr & Katsura, 1985

Bibliography

• Orr, W. N.; Katsura, K. T. (1985), "Oregon's oldest vertebrates [Ichthyosauria(Reptilia)]", Oregon Geology , 47: 75–77
• K. Y. Yeh. 1987. Taxonomic Studies of Lower Jurassic Radiolaria from East-Central Oregon. National Museum of Natural Science Special Publications 2:1-169
• E. A. Pessagno Jr. and P.A. Whalen. 1982. Lower and Middle Jurassic Radiolaria (multicyrtid Nassellariina) from California, east-central Oregon and the Queen Charlotte Islands, B.C. Micropaleontology 28(2):111-169