Rare 4.25″ Subkossmatia opis Fossil Ammonite, Middle Callovian, Jurassic – Maintirano, Madagascar – Genuine with COA

Description

Rare 4.25″ Subkossmatia opis Fossil Ammonite – Middle Callovian, Jurassic – Maintirano, Madagascar

100% Genuine Fossil with Certificate of Authenticity

We are pleased to present this exceptional 4.25-inch Subkossmatia opis fossil ammonite, discovered in Maintirano, Madagascar. This rare specimen dates from the Middle Callovian stage of the Jurassic Period (~166 million years ago). The Subkossmatia opis ammonite is characterized by its distinctive coiled shell and highly detailed suture patterns, making it a valuable addition to any fossil collection.

Geological and Fossil Information:

• Fossil Type: Subkossmatia opis Fossil Ammonite
• Species: Subkossmatia opis
• Morphology Features: The Subkossmatia opis ammonite features a planispiral shell with tightly coiled whorls and well-defined sutures. Its shape and intricate patterns make it an excellent example of Middle Jurassic ammonites.
• Geological Stage: Middle Callovian, Jurassic (~166 million years ago)
• Depositional Environment: This ammonite was formed in a shallow marine environment typical of the Middle Jurassic seas, where ammonites like Subkossmatia opis thrived. The seas were rich in marine life, providing ideal conditions for the formation of these distinctive shell fossils.
• Biozone: The specimen belongs to the Middle Callovian biozone, which is part of the Jurassic period, known for abundant marine life and numerous ammonite species.
• Family: Kossmatiidae
• Super Family: Ammonitoidea
• Order: Ammonitida
• Formally Identified By: This fossil has been professionally identified by paleontologists based on its distinct morphological features and geological context, ensuring the specimen’s authenticity.

Size and Visuals:

The fossil measures approximately 4.25 inches in diameter. A scale rule (1cm squares) is included in the attached photo for accurate size reference. The photo shows the actual specimen you will receive, carefully chosen to highlight its exceptional preservation and intricate features.

Authenticity and Certification:

All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity, guaranteeing the provenance and authenticity of the fossil. This Subkossmatia opis ammonite from Maintirano, Madagascar, is a rare and beautiful example of Middle Callovian ammonites, making it an exceptional addition to any collection.