Museum Quality 20.5" Placenticeras Ammonite - South Dakota

 
 
 
 
 
 
 
This is a massive, museum quality, 20.5" wide Placenticeras costatum collected in Meade County, South Dakota. It was found inside a large concretion, and took over 100 hours of preparation by Neal Larson to expose it. It has a lot of brilliant red and green iridescence in the shell. There is also a fossil baculite present just above the ammonite.

The rock has been wood backed, so that this specimen could be displayed by handing it on a wall, laying flat on a surface, or on a display stand. The piece weighs somewhere around 150 lbs in total and including the rock is about 24" wide.

If you wish to purchase this specimen please Contact Us to arrange payment and shipping.
DETAILS
SPECIES
Placenticeras costatum
LOCATION
Meade County, South Dakota
FORMATION
Pierra Shale
SIZE
Ammonite 20.5" wide, 24" including matrix
ITEM
#31427
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