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  • Laevaptychus obliquus (Quenstedt)


    Images:

    Ludwigia
    • Aptychi mostly existed as bilaterally symmetrical pairs and were part of the anatomy of many ammonites. They are believed to have been either a two-valved closing hatch at the aperture or else a double-plate jaw piece. These particular ones are associated with the ammonite genus Aspidoceras. The photo show a pair in ventral and dorsal views.

    Taxonomy

    Aptychus

    Kingdom: Animalia
    Phylum: Mollusca
    Class: Cephalopoda
    Order: Ammonitida
    Family: Aspidoceratidae
    Genus: Laevaptychus
    Species: L. obliquus
    Author Citation Quenstedt

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Jurassic
    Epoch: Late
    International Age: Early Kimmeridgian

    Stratigraphy

    Lacunosa-Mergel Formation

    Biostratigraphy

    hypselocylum zone

    Provenance

    Collector: Roger Furze
    Date Collected: 08/10/2011
    Acquired by: Field Collection

    Dimensions

    Blank: 3.5cm

    Location

    Hausen i. Tal
    Upper Danube Valley
    Baden-Wuerttemberg
    Germany

    Comments

    Aptychi mostly existed as bilaterally symmetrical pairs and were part of the anatomy of many ammonites. They are believed to have been either a two-valved closing hatch at the aperture or else a double-plate jaw piece. These particular ones are associated with the ammonite genus Aspidoceras. The photo show a pair in ventral and dorsal views.



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