Nicely Formation

Nicely Formation
Stratigraphic range: late Pliensbachian
~186–183 Ma

PreꞒ

Ꞓ

O

S

D

C

P

T

J

K

Pg

N

↓
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′N 119°24′W / 44.1°N 119.4°WCoordinates: 44°06′N 119°24′W / 44.1°N 119.4°W
Approximate paleocoordinates	28°24′N 56°06′W / 28.4°N 56.1°W
Region	Crook, Grant & Harney Counties, Oregon
Country	United States
Extent	Snake River Basin
	Nicely Formation (the United States)Show map of the United StatesShow map of OregonShow all

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]

Orr, W. N., and K. T. Katsura. 1985. Oregon's oldest vertebrates [Ichthyosauria(Reptilia)]. 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