Notoceras (Eubostrychoceras) indopacificum
Order Ammonoidea, Family Notoceratidae
Geological Time: Late Cretaceous, Coniacian Stage (~89 million years ago)
Size (25.4 mm = 1 inch): 85 mm long by 48 mm wide, 20 mm across (uncoiled length 225 mm)
Fossil Site: Madagascar
Fossil Code: 10099
Price: $95.00 - sold
 Description:
This is an exceptionally fine heteromorphic ammonite that has been
professionally prepared to display its beauty in 3-D. It has what
is known as heteromorph shape. While most ammonites have spiral shells
that retain the same shape throughout growth (homomorph), a major
group of ammonites, the Ancyloceratina, emerged during the Late Jurassic
which had uncoiled shells instead, and were called heteromorph ammonites
(different-shaped). While little is known of their mode of life, their
uncoiled shells would have precluded fast swimming. They may have
wobbled their way through the water column with out-splayed tentacles,
sweeping whatever came within their reach into their hungry mouths.
They are rarely seen this complete; a pristine example would command
a price several times that of this offering. |
