Skip to main content

This auction has ended. View lot details

You may also be interested in

Own a similar item?

Submit your item online for a free auction estimate.

Lot 1024

Exquisite Heteromorph Ammonite

27 May 2010, 13:00 EDT
New York

US$3,000 - US$4,000

Own a similar item?

Submit your item online for a free auction estimate.

How to sell

Looking for a similar item?

Our Natural History specialists can help you find a similar item at an auction or via a private sale.

Find your local specialist

Exquisite Heteromorph Ammonite

Didymoceras nebrascenense
Late Cretaceous
Pierre Shale Formation, Southwestern South Dakota

Because these uncommon specimens cannot be commercially collected (and are only rarely found by excavators as shale nodules are opened in the search for more common fossils) Didymoceras specimens are perhaps the most desired ammonites in the world. The bizarre shapes of the coprolitic heteromorph (meaning loosely coiled) ammonites have inspired the imaginations of ammonite collectors the world over. This excellent 70-million-year-old example has been painstakingly freed from its surrounding rock matrix revealing a dark honey to pearlized white iridescent shell. 90% original with restoration to the top coil. Diameter measures 5 x 4 1/4in

Additional information

Bid now on these items