|
Related articles:
Nautilus
Cretaceous
Devonian
Geologic time scale
Cephalopod
Mollusca
Fossil
Amun
Iridescence
Dinosaur
Key terms: ammonite shell fossils cretaceous species chamber upper jurassic septa extinct lobes plate soft cephalopod rocks nautilus suture ink diameter coil ammonite fossil shape genus subclass preserved variation iridescent ammonite shells suborders mesozoic horns monks lobes and saddles rarely outer jurassic to upper cretaceous ornamentation org pierre shale survived neale body chamber characteristic resemble ram patterns clay centimetres seafloor siphuncle Search external links cited by footnotes on Wikipedia page Ammonite: |
|