Asteroceras obtusum, ammonite
Shown here is a Jurassic ammonite. Ammonites are an extinct group of fossil cephalopods related to todays' Nautilus.
Size: 2376px × 2263px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ammonite, ammonoid, ammonoidea, animal, arietitidae, asteroceras, buoyancy, cephalopod, cephalopoda, chamber, coil, fossil, fossilised, invertebrata, invertebrate, jurassic, marine, mesozoic, mollusc, mollusca, mollusk, obtusum, phanerozoic, prehistoric, prehistory, shell
