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.
Meteorites are stony or metallic bodies that fall to the Earth from space. All meteorites show peculiarities not observed in known rocks of Earth, and it is therefore possible to recognize them even if they have not been seen to fall (see TESTING FOR SUSPECTED METEORITES).eteorites are stony or metallic bodies that fall to the Earth from space. All meteorites show peculiarities not observed in known rocks of Earth, and it is therefore possible to recognize them even if they have not been seen to fall (see TESTING FOR SUSPECTED METEORITES).