Ammonite

Ammonites were amazing marine cephalpod molluscs! They are prehistoric creatures.

They have a spiraled shell. Inside, there is the tentacled animal that lived there, the ammonite. They lived in seas from at least 400-65 million years ago. They are closely related to octopus, squid, cuttlefish, and Nautilus.

Ammonites first appeared in the early Devonian period when there were dinosaurs. They evolved from a none spiraled but straight shelled Bactridian. It evolved into a lot of different shape and sizes. The species were gone and extinct in the Cretaceous period. First ammonites were tiny creatures less than 1 millimeter in diameter creatures. They were vulnerable and could not protect themselves too well against their predators including mosasaurs and fish. When their shells changed and got the spiral figure they got bigger and turned into predator themselves. They got eaten too of coarse.

These are very interesting animals and have unique features!!!