Cephalopod fossils own individual features.
Trouble:
Moderately Effortless
Instructions
Things You'll Need
Cephalopod fossil
1 Identify where the fossil was found. Cephalopods stay in oceans, thus if the fossil's place is near an ocean or where an sea once was, your fossil could be that of some cephalopod.
2 Identify the era also shape of your specimen. Cephalopods about the Cambrian era had cone-formed shells. The outer shell became additional spiral with evolution and gained any shape comparable to that of any snail shell. Cephalopods through this kind about fossil structure are recognized as nautiloidea. Ammonoidea, which have coiled shell structures, lived from the Devonian to the Cretaceous age. Unlike nautilodea fossils, ammonoidea have a exactly spiral coil and siphuncles within the chambers about the shell. Coleoidea fossils, from the Cambrian era, are customarily flat shells.
3 Look for any signs of soft body features. Sometimes you will observe imprints of tentacles or suckers on a fossil that will help you identify the type of cephalopod.
References
"Ammonites also the Additional Cephalopods about the Pierre Seaway: Identification Guide (Fossils & Dinosaurs)"; Neil Larson, et al.; 1997
Photo Credit
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