Pachydiscus complexus
Ammonites
TCN
Cretaceous World
YPM IP 393568
Yale Peabody Museum of Natural History
Taxonomy
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Ammonoidea
Family: Pachydiscidae
Genus: Pachydiscus
Species: complexus
Scientific Authorship (Hall & Meek, 1856)
Nomenclatural Code
ICZN
ICZN
Stratigraphy
Geologic Time Period
Period: Late Cretaceous
Rock Unit
Formation: Pierre
Locality
Continent: North America
Country: USA
State/Province: South Dakota
County: Brule
Locality: N of Oacoma; NW of Jack King's Ranch
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