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  • Trypaulites erinus

    Images:

    Kane

    By Kane

    Taxonomy

    Kingdom: Animalia
    Phylum: Arthropoda
    Class: Trilobita
    Order: Phacopida
    Family: Dalmanitidae
    Genus: Trypaulites
    Species: Trypaulites erinus
    Author Citation Delo, 1935

    Geological Time Scale

    Eon: Phanerozoic
    Era: Paleozoic
    Period: Devonian
    Epoch: Early

    Stratigraphy

    Hamilton Group
    Bois Blanc Formation

    Provenance

    Collector: Kane Faucher
    Date Collected: 09/10/2017
    Acquired by: Field Collection

    Location

    London
    Ontario
    Canada

    Comments

    Found among imported fill from various locations, all Devonian (Dundee Fm, Amherstberg Fm, and Bois Blanc Fm). 

     

    Among Bois Blanc Fm rocks more dominated by plentiful examples of other dalmanatids such as Anchiopsis anchiops. This was an outlier and the only example I have been able thus far to find.

     

    My thanks to @piranha for his timely and expert identification of this interesting dalmanatid.

     

     

    Go to fossils Trilobites

    User Feedback


    fifbrindacier

    fifbrindacier

    Posted

    Nice pygidium Kane, this is a rare one.:trilo:

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    Curt P

    How is this distinguished from T calypso?

     Here are two from the Dundee in NW Ohio.  (1 inch is about 2.5 cm)  The both would appear to be Trypaulites, yet they have plenty of differences in appearance.  (For what it's worth, the crisper one is slightly larger.  

    340139001_1404582533626075_6561101374421057661_n.jpg

    343564068_973331537180719_4590494807714423782_n.jpg

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    Kane

    T. calypso has nodes along the pygidial axis. :) 

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    Curt P

    Curt P

    Posted (edited)

    As in there are no nodes on this one?  (So it’s T Erinus?  And the rough one presumably T calypso?

    Edited by Curt P

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    Kane

    The second one appears to have nodes

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    Curt P

    Yes.  I see.  Thoughts on the first one?

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    Kane

    I would say the first one would likely be Pseudodechenella sp. 

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