Jump to content
  • Sign in to follow this  

    Ascocystites drabowensis


    Sign in to follow this  
    Images:

    Tidgy's Dad
    • The dimensions given are for the largest specimen. The block is 11.5 com at it's widest point by 10 cm and 2 cm deep. 

      Most of the of the other species ascribed to this genus in Morocco are now considered junior synonyms.

      See https://link.springer.com/chapter/10.1007%2F978-3-319-04364-7_199

      Notice that they are all aligned in one direction as they were buried by a mudflow sweeping in from the continent. The arms, bodies and stems are all pretty much aligned. This seems to have occurred fairly regularly in this area at this time. 

      Also notice younger, smaller specimens have fewer plates and arms. 

       

       

    Taxonomy

    Eocrinoid

    Kingdom: Animalia
    Phylum: Echinodermata
    Class: Eocrinoidea
    Order: Ascocystitida
    Family: Ascocystitidae
    Genus: Ascocystites
    Species: A. drabowensis
    Author Citation Barrande 1887

    Geological Time Scale

    Era: Paleozoic
    Period: Ordovician
    Epoch: Late

    Stratigraphy

    First Bani Group
    Izegguirene Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Blank: 8.5cm
    Width: 0.9cm

    Location

    Bou Nemrou
    Kaid Errami
    Morocco

    Comments

    The dimensions given are for the largest specimen. The block is 11.5 com at it's widest point by 10 cm and 2 cm deep. 

    Most of the of the other species ascribed to this genus in Morocco are now considered junior synonyms.

    See https://link.springer.com/chapter/10.1007%2F978-3-319-04364-7_199

    Notice that they are all aligned in one direction as they were buried by a mudflow sweeping in from the continent. The arms, bodies and stems are all pretty much aligned. This seems to have occurred fairly regularly in this area at this time. 

    Also notice younger, smaller specimens have fewer plates and arms. 

     

     

    Sign in to follow this  


    User Feedback


    Thanks for sharing. I recently acquired similar plate for my collection but it was identified as "Scyphocrinites CRINOID Fossils from Morocco 488 Million Years Old".

    Share this comment


    Link to comment
    Share on other sites
    On 9/23/2019 at 12:31 AM, KOI said:

    Thanks for sharing. I recently acquired similar plate for my collection but it was identified as "Scyphocrinites CRINOID Fossils from Morocco 488 Million Years Old".

    Sorry KOI but they are definitely not Scyphocrinites. The photo I’m attaching is a Scyphocrinites. Tidgys dads I’d is correct.

    57E386A3-B5D8-4B16-B3DA-9D7EC1904113.jpeg

    Share this comment


    Link to comment
    Share on other sites

    Thanks, Randyw. Clearly, I should not put my trust in online vendors for correct identification of fossils they sell.

    Share this comment


    Link to comment
    Share on other sites
    Tidgy's Dad

    Posted · Report

    Thanks, peeps. 

    @KOI Ascocystites is rarer than Scyphocrinites here, so you've done alright, I reckon. :)

    Share this comment


    Link to comment
    Share on other sites

    Ascocystites are fine with me. They are a bit unusual and interesting animals. Here is a video featuring the slab we bought on online. A piece of carpoid was also among eucrinoids. This Moroccan rock was fun to study. Thanks again to Tidgy's Dad for posting the photos.

     

    Share this comment


    Link to comment
    Share on other sites


    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now


×