• Ammonoidea - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Ammonite The ammonoids as a group continued through several major extinction events, although often only a few species survived. Each time, however, ...
  • GeoKansas--Ammonoid Fossils - Kansas Geological Survey

    www.kgs.ku.edu/Extension/fossils/ammonoid.html Ammonoid Fossils. Description: Ammonoids were squidlike creatures that lived inside an external shell. In fact, ammonoids are relatives of the modern squid, as well ...
  • Ammonoids - Fossil Picture Gallery - Geology on About.com

    geology.about.com/od/fossilstimeevolution/ig/.../fossil-ammonite.htm Paleontologists are careful to distinguish the ammonoids from the ammonites. Ammonoids lived from Early Devonian times until the end of the Cretaceous Period, or from ...
    • ammonoid | fossil cephalopod subclass | Britannica.com

      www.britannica.com/animal/ammonoid Ammonoid, also called ammonite ... Ammonoids are characterized and distinguished from nautiloids by the highly crenulated and complex suture that occurs where ...
    • Palaeocast | Palaeontology podcasts

      www.palaeocast.com/episode-17-ammonoid-evolution-and-ecology Episode 17: Ammonoid evolution and ecology. Ammonoids are a diverse group of cephalopods, a group of molluscs that include squid, octopuses, cuttlefish and nautiloids.
    • Ammonoidea - Fossil Wiki - Wikia

      fossil.wikia.com/wiki/Ammonoidea The Ammonoidea constitute a subclass of extinct cephalopods found in marine sediments from ... Ammonoids are commonly referred to in the vernacular as Ammonites, ...