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  • Entobia cretacea

    Images:

    TqB

    By TqB (edited)

    Taxonomy

    Boring Sponge in Belemnite

    Kingdom: Animalia
    Phylum: Porifera
    Class: Demospongia
    Order: Clavulina
    Family: Clionaidae
    Genus: Entobia
    Species: Entobia cretacea
    Author Citation Portlock 1843

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Sub Period: None
    Epoch: Late
    International Age: Early Maastrichtian

    Stratigraphy

    Chalk Group
    Upper Chalk Formation (informal)

    Biostratigraphy

    Belemnella lanceolata Zone

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 67 mm

    Location

    Balsvik Quarry
    Kristianstad Basin
    southern
    Sweden

    Comments

    Sponge borings in Belemnitella sp., filled with Chalk. Formerly and widely known as Cliona cretacea.

    Go to fossils Ichnofossils

    User Feedback


    FossilDAWG

    Amazing! :wub:

    Don C

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    TqB

    Thanks, @Al Dente & @FossilDAWG, it's the best example I've seen in a belemnite and I was glad of the oppotunity to buy it!

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    Coco

    Very nice !

     

    Coco

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    abyssunder

    Excellent specimen! :)

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    jewelonly

    Gorgeous!! I had no idea that belemnites had this type of internal structure. 

     

    Leah

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    DevonianDigger

    DevonianDigger

    Posted

    That is a seriously nice specimen. So cool to look at!

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    TqB
    1 hour ago, jewelonly said:

    Gorgeous!! I had no idea that belemnites had this type of internal structure. 

     

    Leah

     

    Thanks, Leah, it's not normal belemnite structure, it's been bored by a distinctive type of sponge. :)

    1 hour ago, DevonianDigger said:

    That is a seriously nice specimen. So cool to look at!

     

    Thank you! I agree, you more commonly see this in Inoceramid bivalves. :)

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