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  2. Ammonoidea - Wikipedia

    en.wikipedia.org/wiki/Ammonoidea

    A primary difference between ammonites and nautiloids is the siphuncle of ammonites (excepting Clymeniina) runs along the ventral periphery of the septa and camerae (i.e., the inner surface of the outer axis of the shell), while the siphuncle of nautiloids runs more or less through the center of the septa and camerae.

  3. List of ammonite genera - Wikipedia

    en.wikipedia.org/wiki/List_of_ammonite_genera

    This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms. The list includes genera that are commonly accepted as valid, as well as those that may be invalid or doubtful ( nomina dubia ), or were not formally published ( nomina nuda ), as well as junior ...

  4. Ammonitida - Wikipedia

    en.wikipedia.org/wiki/Ammonitida

    Ammonitida or "True ammonites" are an order of ammonoid cephalopods that lived from the Jurassic through Paleocene time periods, commonly with intricate ammonitic sutures. Ammonitida is divided into four suborders, the Phylloceratina , Lytoceratina , Ancyloceratina , and Ammonitina .

  5. Hammatoceras - Wikipedia

    en.wikipedia.org/wiki/Hammatoceras

    Hammatoceras is a genus of ammonites belonging to the family Hammatoceratidae ... Germany, Hungary, Indonesia, Italy, Spain, Tunisia and the United Kingdom ...

  6. List of fossil sites - Wikipedia

    en.wikipedia.org/wiki/List_of_fossil_sites

    This list of fossil sites is a worldwide list of localities known well for the presence of fossils.Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there.

  7. Category:Permian ammonites - Wikipedia

    en.wikipedia.org/wiki/Category:Permian_ammonites

    This page was last edited on 2 November 2023, at 00:41 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  8. Category:Ammonites - Wikipedia

    en.wikipedia.org/wiki/Category:Ammonites

    Ammonites — members of the Ammonoidea subclass of molluscan prehistoric cephalopods. Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large.

  9. Menuthiocrioceras - Wikipedia

    en.wikipedia.org/wiki/Menuthiocrioceras

    Menuthiocrioceras is an ammonite genus from the Early Cretaceous belonging to the Ancyloceratoidea. Fossils belonging to this genus were found in Madagascar and Indonesia. Fossils belonging to this genus were found in Madagascar and Indonesia.