This is prehistoric fossilized mollusk called ammonite, an extinct marine animal.
Size: 5616px × 3744px
Photo credit: © Henri Koskinen / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: ammonite, animal, biology, bone, cephalopod, closeup, coil, detail, evolution, extinct, fossil, fossilization, fossilized, geode, geology, geometry, macro, marine, mollusk, nautilus, paleontology, pattern, prehistoric, reflection, spiral, texture