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  • Palastraea regia

    Images:

    TqB

    By TqB

    Taxonomy

    colonial rugose coral

    Kingdom: Animalia
    Phylum: Cnidaria
    Class: Anthozoa
    Order: Rugosa
    Family: Palaeosmiliidae
    Genus: Palastraea
    Species: Palastraea regia
    Author Citation (Phillips, 1836)

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Carboniferous
    Sub Period: None
    Epoch: Late
    International Age: Brigantian

    Stratigraphy

    Clwyd Limestone Group
    Cefn Mawr Limestone Formation

    Provenance

    Collector: C. Anstey
    Date Collected: 03/26/2000
    Acquired by: Purchase/Trade

    Dimensions

    Width: 12 cm

    Location

    Flintshire County
    North Wales
    United Kingdom

    Comments

    Formerly often included in Palaeosmilia which is now restricted to solitary forms.

    A very distinctive colonial coral, astraeoid to aphroid (aphroid in this case, i.e. with septa that do not join between corallites). The calices can be up to 5cm across.

     

    In this specimen, many of the voids are lined with quartz crystals, others are filled completely. (Traces of blue are from a polishing paste).

    Go to fossils Corals

    User Feedback


    jewelonly

    Outstanding!! Another coral with very beautiful structure! The first pic makes me think you would be able to see a coral wall between the individuals in the colony which isn't evident in the magnified pics, or at least not to me. :) 

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    TqB
    57 minutes ago, jewelonly said:

    Outstanding!! Another coral with very beautiful structure! The first pic makes me think you would be able to see a coral wall between the individuals in the colony which isn't evident in the magnified pics, or at least not to me. :) 

     

    Thanks, Leah! - that's right, there are no walls between corallites in this one. It's variously astraeoid (where the septa from adjacent corallites join up) or aphroid (where they don't). This one's mostly aphroid. It still has ridges between corallites on the calicular surface though (last pic).

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    doushantuo

    awesome anthozoa,classic coelenterates!

    Great specimens & photography!:dinothumb:

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    TqB

    Thanks, Ben! Definitely a classic species. :)

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