Orthoceras fossil model 2

Orthoceras fossil model 1, size: 16 cm * 5 cm * 1 cm

Orthoceras is a genus of ammonite that lived during the Ordovician period, about 485-443 million years ago. This genus of ammonite is known for its elongated and thin shell, which was often used in the stratigraphic and chronological interpretation of rocks from that period.

Ammonites, including Ortoceras, were marine molluscs with spiral and segmented outer shells that were often found as fossils in rock layers. These fossils are important for understanding the evolution of marine life and the geological history of the Earth.

Ortoceras shells are often long and cylindrical, with septa delimiting the internal shell chambers. These sea creatures were carnivorous, hunting other small organisms for food.

Ortoceras fossils are sought after by collectors and paleontology enthusiasts for their aesthetic beauty and the valuable information they provide about the life and environment they lived in in Earth's distant past.