Hoploscaphites nodosus Natural Ammonite Cluster from Montana

$230.00

Description

For sale is a wonderful natural association of two Holoscaphites nodosus ammonites from Dawson County, Montana. Both ammonites are in very good condition and their little nodes are still intact. The ribbing is quite detailed as well. This genus is heteromorphic, meaning that they are not coiled. There are a few nicks and erosions, as the photos show but overall, this is a superb specimen and quite rare as well, suitable for an intermediate or advanced ammonite collector.

As per usual, 100% natural.

Specifications

Species: Hoploscaphites nodosus

Length: 132.27mm (5.207")

Width: 63.9mm (2.516")

Weight: 700 grams (1.543 lbs.)

Location: Dawson County, Montana

Age: Maastrichtian stage, 70 million years

Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out during the Cretaceous–Paleogene extinction event.

Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs).

Source: www.wikipedia.org/wiki/Ammonoidea

 

Specifications

Length: 132.27mm (5.207")

Width: 63.9mm (2.516")

Weight: 700 grams (1.543 lbs.)

Location: Dawson County, Montana

Species: Hoploscaphites nodosus

Geological era: Mesozoic

Period: Cretaceous

Stage: Maastrichtian

Age (MYA): 70 Million Years

 

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Region Standard (tracked) Express (1-4 business days)
North America $12 $25
UK & Europe $16 $30
New Zealand $10 $20
Australia Free $8

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If your item(s) arrives damaged, or you are not 100% satisfied with it, please contact us with the details and if the problem cannot be resolved we will issue you a full refund upon receiving the item back in the mail. Our refund will include the whole amount you paid as well as the cost of your postage. We strive to make our customers happy so please contact us if you have any trouble or questions.