Artistic Split Craspedites Jurassic Ammonite

Craspedites nodiger Ammonite

Geological Time: Upper Jurassic , Tithonian Stage (150 mya)

Size (25.4 mm = 1 inch): Ammonite is 68 mm diameter (each)

Fossil Site: Ulyanovsk, Volga Region, Russia

Fossil Code: AA026

Price: $65.00

Craspedites Jurassic AmmoniteDescription: This spectacular ammonite is Craspedites nodiger from Russia which has been split in half and polished to show the wonderful detail within. The individual chambers are preserved as grayish-white Calcite crystals, with the septa (divisions) between each chamber preserved as black Calcite, making for a superb display piece. The reverse has preserved most of the intricate suturing which provided strength for the shell at low weight expense, an important feature for an animal which relied on near neutral buoyancy to allow it to move freely throughout the water column. It is this delicate suturing for which these ammonites are well known; I have included a photo of an unsplit example. There is also a small amount of the original nacreous shell preserved as well, showing iridescent flash. This is a large example of an ammonite from the Tithonian Stage (150 m.y.a) deposits of Russia, one that is sure to be a fine addition to any ammonite collection.

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