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Lot 1024
Exquisite Heteromorph Ammonite
27 May 2010, 13:00 EDT
New YorkUS$3,000 - US$4,000
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Find your local specialistExquisite 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
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

