Researchers have found a remarkable effect while studying how marine particles sink, which could affect the way scientists assess global carbon fluxes.
Ammonites are an group of marine animals of the subclass Ammonoidea in the class Cephalopoda. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geologic time periods.mmonites are an group of marine animals of the subclass Ammonoidea in the class Cephalopoda. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geologic time periods.
Ammonites are the spiral-shelled things that lived in the ocean. They are usually drawn with tentacles coming out of the shells. The closest relation to the ammonite fam â¦ ily now is the Coleoidea family (squid, cuttlefish, and octopus).