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  1. Wikipedia
    https://en.wikipedia.org/wiki/Spatangoida

    Spatangoida - Wikipedia

  2. Wikipedia
    https://nl.wikipedia.org/wiki/Spatangoida

    Spatangoida - Wikipedia

  3. People also ask
    Where does spatangoidea go?
    Based on the available data a placement within Spatangoidea seems most likely, where it takes up an intermediate position between maretiids, loveniids and spatangids.

    Stara,P. et al. 2016, Revision of the genus Mariania... Bulletin of Geoscie…

    geology.cz
    Is Spatangoida paraphyletic?
    In the basal groups of the Spatangoida, the features like Heteraster. Fischer (1966, p. U651) noticed that ‘the genus is diverse and requires subdivision’. Its paraphyletic status is not in doubt, but cannot be resolved without a complete revision of all its species.

    (PDF) Phylogeny of Early Cretaceous spatangoids (Echinodermata

    researchgate.net
    Are spatangoids echinoids?
    Spatangoids are a monophyletic group of fossil and extant irregular echinoids known to occur in rocks as early as Barremian (Early Cretaceous) (Villier et al., 2004; Stockley et al., 2005;Kroh and Smith, 2010). The Order Spatangoida comprises ca. ... ...

    (PDF) Phylogeny of Early Cretaceous spatangoids (Echinodermata

    researchgate.net
    Which genus of spatangoid phyllodes are emended?
    New material from the Miocene of Italy allows revision of the spatangoid genus Mariania Airaghi, 1901 and proposal of an emended diagnosis. Particularly characteristic, previously overlooked features of the genus include the presence of well-developed phyllodes made up from short, almost equidimensional plates in oral ambulacra II, III and IV.

    Stara,P. et al. 2016, Revision of the genus Mariania... Bulletin of Geoscie…

    geology.cz
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  4. Wikipedia
    https://nl.wikipedia.org/wiki/Spatangoidea

    Spatangoidea - Wikipedia

  5. Britannica
    https://www.britannica.com/animal/heart-urchin

    Heart urchin | Sea Creature, Spiny Shell, Radial Symmetry

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    Heart Urchin Scientific Name
    Lifespan of Heart Urchin
  6. heart ur·chin
    noun
    1. a heart-shaped burrowing sea urchin which has a thick covering of fine spines on the shell, giving it a furry appearance.
    More about heart urchin
  7. Cambridge University Press & Assessment
    https://www.cambridge.org/core/journals/journal-of-the-marine...

    The biology of Echinocardium cordatum [Echinodermata: …

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    John B. Buchanan
    Publish Year:1966
  8. plos.org
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.014…

    Ecophenotypic Variation and Developmental Instability in the

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    Publish Year:2016
    Author:Nils Schlüter

  9. Images of Spatangoidea

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  10. ScienceDirect
    https://www.sciencedirect.com/science/article/pii/S0753396918300545

    Redefinition of Prospatangus thieryi Lambert, 1909 (Echinoidea ...

    Tags:
    Paolo Stara, Sylvain Charbonnier, Enrico Borghi
    Publish Year:2018
  11. ResearchGate
    https://www.researchgate.net/publication/227644935_Phylogeny_of_Ea…

    (PDF) Phylogeny of Early Cretaceous spatangoids (Echinodermata ...

  12. Wikiwand
    https://www.wikiwand.com/nl/Spatangoidea

    Spatangoidea - Wikiwand

  13. geology.cz
    http://www.geology.cz/bulletin/contents/art1576

    Stara,P. et al. 2016, Revision of the genus Mariania... Bulletin of ...

    Tags:
    Publish Year:2016
    P. Stara, E. Borghi, A. Kroh
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