Sign In


Products
   Fossils
     Ammonites
       Ammonites - England
       Ammonites - Madagascar
       Ammonites - South Dakota
         Acanthoscaphites
         Conglomerate
         Didymoceras
         Hoploscaphites
         Jeletzkytes
         Menuites
         Placenticeras costatum
         Placenticeras intercalare
         Placenticeras meeki
         Prionocyclus wyomingensis
         Sphenodiscus
         Rhaeboceras
         Trachyscaphites
         Eutrephoceras
       Ammonites - Russia
     Trilobites
     Fossil Sets
     Other
     Wood
     Plants
     Copal
     Baculites
     Bivalves
     Original Casting Fossils
     Coprolites
     Teeth
     Bone
     Gastropods
   Replicas
   Clothing
   Jewelry
   Fluorescent Minerals & Equipment
Brazil calcite and quartz
Perchoerus - peccary
Illinois
Dinosaur Eggshell
Crocodile teeth
Trematochamsid crocodile
Ginglymostoma moroccanum
Media

The ammonites of South Dakota were residents of the Pierre Seaway. The Pierre Seaway expanded and contracted throught the Cretaceous Period (144 - 66.5 million years ago). The Pierre shales, which we find most of the ammonites in, were laid down during the Campion and Maastrichtian Stages (82 - 69 million years ago).

The Pierre Seaway extended from the Gulf of Mexico to the Arctic Ocean. It covered parts of Texas, New Mexico, Oklakoma, Colorado, Kansas, Nebraska, Wyoming, Montana, South Dakota, North Dakota, and Canada. Depths ranged from about 50 meters to 200-300 meters at its deepest points.

This inland seaway accounts for the variety of fish, reptiles, mollusks, and other aquatic animals and plants that we find in the sedementary deposits of these states.

Placenticeras meeki



Placenticeras meeki
Code: FAM-220
Price: $1,350.00
Quantity in Basket: none
 



Placenticeras meeki
Code: FAM-221
Price: $265.00
Quantity in Basket: none
 



Placenticeras meeki
Code: FAM-222
Price: $675.00
Quantity in Basket: none
 



Placenticeras meeki with Amphids
Code: FAM-223
Price: $3,300.00
Quantity in Basket: none
 



Placenticeras meeki
Code: FAM-224
Price: $12,000.00
Quantity in Basket: none
 



Placenticeras meeki
Code: FAM-225
Price: $1,100.00
Quantity in Basket: none
 



Ecommerce Shopping Cart Software by Miva


Ecommerce Shopping Cart Software by Miva