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Diplomoceras

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Diplomoceras
Diplomoceras is a genus of ammonite, a type of cephalopod mollusk that lived during the Cretaceous period, specifically in the Upper Cretaceous, approximately 95 million years ago. Ammonites were marine animals related to squid and octopuses, but they had an external spiral shell that set them apart.

What makes Diplomoceras notable is its impressive size and highly ornamented shell. These ammonites could reach exceptional size, with shells measuring more than 2 meters (6.5 feet) in diameter. The shell was coiled into a flat spiral and was characterized by a series of ridges and spines along its surface. These ridges and spines provided greater strength and buoyancy, as well as possibly a defensive function against marine predators.

The distinctive shell shape of Diplomoceras has often been compared to a snail with a very flat, disc-shaped spiral. This shell had a relatively large opening in the ventral part, where the animal was located. Inside the shell, Diplomoceras would have had a soft body and a series of tentacles that it used to capture prey and navigate the water.

These ammonites were benthic animals, meaning they lived at the bottom of the sea. They fed mainly on small marine organisms, such as crustaceans and other invertebrates. Diplomoceras moved by swimming in water and would have been an important part of the food chain in the ancient Cretaceous ocean.

Diplomoceras fossils have been found in various parts of the world, including North America, Europe, and Asia. These fossils are important to paleontologists because they provide information about the evolution and ecology of ammonites in the Late Cretaceous, as well as the marine conditions of the time. Their large size and ornate shell make them impressive specimens that are often displayed in paleontology and geology museums.

Approximate measurements of Diplomoceras:
  • Scale 1:20 - 100 mm