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  • Bryozoa; Massive Form


    sixgill pete



    Kingdom: Animalia
    Phylum: Bryozoa
    Class: Gymnolaemata
    Order: Cheilostomata
    Family: Smittinidae
    Genus: Parasmittina
    Species: Parasmittina collum
    Author Citation (Canu & Bassler, 1920)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Paleogene
    Sub Period: None
    Epoch: Eocene
    International Age: Priabonian


    Castle Hayne Formation
    Comfort Member


    Collector: Don Rideout
    Date Collected: 12/20/2016
    Acquired by: Field Collection


    Diameter: 26


    Martin Marieta Quarry Castle Hayne
    New Hanover County
    North Carolina
    United States


    This is a common find at this particular quarry, this one P. collum has encrusted what appears to be a Chlamys cookei bivalve.


    After deciding to add this bryozoa, I had to do a lot of research. What I found is that I really knew nothing about bryozoans. I had always believed this to be an encrusting type bryozoa. Well, I found this species is one of the massive type byozoans. It initially encrusts the host, but then it builds layer upon layer, hence making it a massive form. 


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