Williams Fork Formation

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Williams Fork Formation
Stratigraphic range: Campanian (Edmontonian)
~73–70  Ma
O
S
D
C
P
T
J
K
Pg
N
Type Geological formation
Unit of Mesaverde Group
Lithology
Primary Mudstone
Other Sandstone
Location
Coordinates 40°00′N108°48′W / 40.0°N 108.8°W / 40.0; -108.8
Approximate paleocoordinates 47°30′N80°18′W / 47.5°N 80.3°W / 47.5; -80.3
Region Colorado
Country United States
Usa edcp relief location map.png
Lightgreen pog.svg
Williams Fork Formation (the United States)
USA Colorado relief location map.svg
Lightgreen pog.svg
Williams Fork Formation (Colorado)

The Williams Fork Formation is a Campanian to Maastrichtian (Edmontonian) geologic formation of the Mesaverde Group in Colorado. Dinosaur remains are among the fossils that have been recovered from the formation, most notably Pentaceratops sternbergii ,. [1] Other fossils found in the formation are the ammonite Lewyites , tyrannosaurids, dromaeosaurids, troodontids, nodosaurids, ankylosaurids, hadrosaurids, hybodonts, neosuchian crocodylomorphs, and the mammals Glasbius and Meniscoessus collomensis . [2] [3]

Contents

See also

References

  1. Diem, Steve; Archibald, James D. (2005). "Range extension of southern chasmosaurine Ceratopsian dinosaurs into northwestern Colorado". Journal of Paleontology. 79 (2): 251–258. Bibcode:2005JPal...79..251D. CiteSeerX   10.1.1.538.7263 . doi:10.1666/0022-3360(2005)079<0251:REOSCC>2.0.CO;2. S2CID   17715685 . Retrieved 21 September 2016.
  2. Jubb Creek at Fossilworks.org
  3. Rangely South (SDNHM) at Fossilworks.org

Bibliography

Further reading