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Ammonoids & Nautiloids


This category is for fossils of the cephalopod subclasses of Ammonoidea and Nautiloidea.


Albums

  1. Russian Upper Kimmeridgian ammonites

    Kimmeridgian is the least pronounced Late Jurassic age in European Russia. Preservation is typically not the best, often pyritized and the fossils themselves are usually found in clay. Better known Upper Kimmeridgian outcrops are located in Ulyanovsk and Samara regions (Volga), Kostroma (Unzha), Kaluga, etc. Typical ammonite genera include Sarmatisphinctes, Aulacostephanus and Aspidoceras/Sutneria. Lots of pyritized Aspidoceras aptichi are usually present in corresponding sites.
    • Album created by RuMert
    • Updated
    • 25 images
    • 2 album comments
    • 4 image comments
    • 25 images
    • 2 album comments
    • 4 image comments
  2. Russian Lower Kimmeridgian ammonites

    Lower Kimmeridgian is rarely seen in local outcrops, usually as imprints in clay, yet sometimes colorful (Moscow, Vladimir and Tver Oblasts). There are also some small pirytized inflated specimens in Tatarstan Republic (pictured here). Represented are such genera as Amoebites (Amoeboceras, Cardioceras), Crussoliceras (migrants from the Divisum zone of Central Europe), Rasenia, etc
    • Album created by RuMert
    • Updated
    • 23 images
    • 3 album comments
    • 8 image comments
    • 23 images
    • 3 album comments
    • 8 image comments
  3. Russian Lower/Middle Oxfordian ammonites

    Lower Oxfordian ammonites of good quality are found mostly in Mikhaylov quarries, Ryazan Oblast. Middle Oxfordian ammos are much harder to come by, and their quality leaves much to be desired. Inflated ones are very rare.
    • Album created by RuMert
    • Updated
    • 8 images
    • 8 images
  4. Russian Lower/Middle Volgian ammonites

    Lower Volgian fossils in European Russia are scarce (washed out), inflated ammonites are present in Orenburg and sometimes Ulyanovsk. They are from 3 ammonite zones defined by various species of  Ilowaiskya (klimovi, sokolovi and pseudoscythica).
    Middle Volgian is much more widespread, it's also  divided into 3 zones, everybody here is familiar with: Dorsoplanites panderi, Virgatites virgatus and Epivirgatites nikitini.
    Dorsoplanitidae family flourished during the Middle Volgian in the entire northern (boreal) area from Siberia to Greenland. As descendants of the Perishpinctidae family, dorsoplanitids retained their gigantism (30-40 cm is the normal size for many of their macroconchs). Two Dorsoplanitidae genera (Dorsoplanites and Pavlovia) dominated the 1st Middle Volgian (panderi) zone. Dorsoplanites also evolved into Lomonossovella and the latter - into Epivirgatites, the 2 genera that in turn dominated the last (nikitini) zone. The 2nd (virgatus) zone is defined by the genus Virgatites, derived from Ilowaiskya. Their characteristic feature are numerous ribs assembled in bundles.
    Mid-Volgian ammonites are often massive and preserved as rough phosphorite and sandstone steinkerns. The bigger they are the less is the chance to see the inner whorls.
    • Album created by RuMert
    • Updated
    • 30 images
    • 4 album comments
    • 5 image comments
    • 30 images
    • 4 album comments
    • 5 image comments
  5. Ammonites of the Betic Ranges (Spain) and world

    My collection of ammonites collected over the years.
    • Album created by phylloceras
    • Updated
    • 15 images
    • 15 images
  6. Ammonite

    Here are some Ammonite Cephalopods from the Lower Mississippian of Kentucky
    • Album created by howard_l
    • Updated
    • 25 images
    • 4 image comments
    • 25 images
    • 4 image comments
  7. Ammonites of Southern Spain and world

    My collection of ammonites proceeding from the south of Spain (Baetic Cordillera) and the world.
    • Album created by phylloceras
    • Updated
    • 373 images
    • 29 image comments
    • 373 images
    • 29 image comments
  8. alpine liassic ammonites

    • Album created by andreas
    • Updated
    • 7 images
    • 15 image comments
    • 7 images
    • 15 image comments
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