Fosil Ammonites Macrocephalus sp.Your model is disabled. For more details go to Edit properties3D Model
Ammonoids are a group of cephalopod molluscs similar to octopuses and squids, with an outer shell divided into chambers by retracted septums. The morphology of their shells come in a variety of forms, but they are mainly conical and rolled in a whorl. The first animals of this group appeared in the Lower Devonian period and lasted until the Upper Cretaceous period. These fossils are of major stratigraphic value since they are useful to accurately date marine sediments from between 395 and 65 million years ago. They are considered guide fossils due to their abundance and paleobiogeography as they allow for environmental reconstructions and determining the chronostratigraphy of the carrier layers.
Ammonoid Fossil Macrocephalus sp.
MHNV-350. Paleontological collection. Year: No record
Source: Occasional Publication N○ 63/2015 National Museum of Natural History.