South Dakota Ammonite in Matrix
Lot 4147
South Dakota Ammonite in Matrix
US$ 3,500 - 4,500
£2,100 - 2,600
Auction Details
Lot Details
South Dakota Ammonite in Matrix
Sphenodiscus sp.
Upper Cretaceous
Fox Hills Formation, North Central South Dakota

An extraordinary occurrence, here is a large, complete example of one of the most beautiful American ammonites, Sphenodiscus. The specimen exudes exceptional rarity and quality, revealing an entire shell preserved with gorgeous glowing red coloration with absolutely no restoration or repair. The source fossil beds for such specimens have been heavily collected for over 60 years making the availability of even lower quality specimens severely limited. The present large, exceptional offering displays beautiful shimmering hues in contrast to its original shale matrix nodule. overall width: 20in. length of specimen: 13in
Activities
Auction information

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Contacts
  1. Claudia Florian, G.J.G
    Specialist - Natural History
    Bonhams
    Work
    7601 W. Sunset Boulevard
    Los Angeles, United States 90046
    Work +1 323 436 5437
    FaxFax: +1 323 850 5843