Very rare corkscrew "heteromorph" ammonite from Japan

Name: Hyphanthoceras sp.

Age: Cretaceous

Size: (25.4mm=1 inch): 5" long, 2 1/2" tall and 1/4" thick

Location: Hokkaldo Island, Japan

Code: PS0304

Price: $1,525.00 - Sold

This corkscrew "heteromorph" ammonite from Japan is very rare. The ammonite is 4" tall and 1 3/4" wide, on matrix, 6" x 6" x 7". The species is similar to the North American Didymoceras and is characterized by a loose and irregular spire. Three other traditional ammonites are also on the matrix block and is NOT a composite. A must for the serious ammonite collector!

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