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Perisphinctes Ammonites 110mm


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Perisphinctes Ammonites approximatel 95 mm diameter or maximum width of the little cephalopods. The delightfully distinct detail of each ammonite makes these ammonoids very desirable and collectable. Suitable for any emerging palaeontologist or established collection.

Perisphinctus; type Dichotomoceras, bifurcatus (M. Collignon, 1959)
Subfamily: Perisphinctinae
Family: Perisphinctidae
Superfamily: Perisphinctoidea
Age: Jurassic period, Callovian - Oxfordian stages: 166 to 163 million years ago.
Origin: Tulear, Madagascar.

Measurement: Width: 11.0 cm

Approximate average weight: 400 g

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A beautiful pale dusky white or cream toned fossil Perisphinctes ammonite prepared from the surround limestone matrix (fossil bedrock), this conservation enabling the fine ribbing detail of the once extant shell to be viewed today. This particular Ammonite type is from the Jurassic period, originating from Tulear region in southern Madagascar, an island cut off from the rest of the world for millennia developing its own unique ecosystems and flora and fauna, which lies off the east coast of Africa.

You will receive one Perisphinctus ammonite, which may vary slightly. All are of the highest quality.

The breakup of Gondwana, the one landmass or supercontinent separated Madagascar, Antarctica and India landmass from Africa and the South American landmass around 135 million years ago. Madagascar broke away from India around 88 m.y.a. remaining in the lower Indian ocean while the Indian landmass moved northwards. Thus plants and animals on the island evolved in relative isolation creating their unique ecosystems.

Additional Information

Age Jurassic
Origin Madagascar