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  • Rangeomorph Holdfast


    Images:

    Tidgy's Dad

    Taxonomy

    Rangeomorph Holdfast

    Kingdom: Vendobionta
    Phylum: Rangeomorpha
    Class: Incertae sedis
    Order: Incertae sedis
    Family: Incertae sedis
    Genus: Medusina
    Species: Medusina mawsoni
    Author Citation Sprigg

    Geological Time Scale

    Eon: Proterozoic
    Era: Neoproterozoic
    Period: Ediacaran
    Sub Period: None
    Epoch: Middle

    Stratigraphy

    Ediacara Formation
    Rawnsley Quartzite Member

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Diameter: 1.5 cm

    Location

    Nilpena
    Ediacara Hills
    South Australia
    Australia

    Comments

    Until recently classified as a jellyfish, Medusina mawsoni is now considered to be the trace where a holdfast where a rangeomorph such as Rangea was connected to the substrate as in Charniodiscus being the base of Charnia. This specimen is thus about 555 million years old and is from the Rawnsley Quartzite. 



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