An ammonite of the genus Hoploscaphites taken by me on 3-13-05. This one is from the Pierre Seaway strata of South Dakota. Much of the original nacre (mother-of-pearl) shell is still intact. Ammonites are a type of extinct cephalopod related to nautiluses and squids.
Though filename says Holoscaphites, this is wrong. Its Hoploscaphites.
Click on a date/time to view the file as it appeared at that time.
|current||19:03, 20 January 2007||1,024 × 964 (239 KB)||Rick Swarts||[http://en.wikipedia.org/wiki/Image:HoloscaphitesAmmonite.jpg source and rights]|