They are the preserved remains or traces of animals, plants, and other organisms from de remote past.
We usually found them in sedimentary rocks
-Index or guide fossils: used to define and identify geological periods.
- Easy to identify
- Widely distributed
- Occur in many types of rocks
–Trilobites: marine arthropods of the paleozoic
-Ammonites: marine invertebrate animals
- They were cephalopods
-Nummulites: marine protozoan of the Terciary
- They are particularly located arround the Mediterranean, also in “La Sierra de Guara” because of the alpine orogenic.
-Belemnites: the internal shell of an extinct cephalopod mollusc of the Jurassic and Cretaceous.
-Ignite: the footprint of a dinosaur.
-Comprolite: fossiliced animal feces.
Sara Escribano 4º A