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New upper permian superfamily compositelasmatoidea (Brachiopoda, Terebratulida) from the east of the Russian platform: The specificity of ontogenetic transformations

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Abstract

A previously unknown type of ontogeny is discussed that unites features of two different types of loop development: the ancient dielasmoid type, which is typical of Upper Paleozoic terebratulids, and the angustothyridid type, which is typical of the Lower Mesozoic terebratulids. A new superfamily, Compositelasmatoidea, and a new family, Compositelasmatidae, with its type genus Compositelasma gen. nov., are established based on their unique ontogenetic changes.

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References

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Authors and Affiliations

  1. Department of Paleontology, Faculty of Geology, Moscow State University, Leninskie gory, Moscow, 119899, Russia

    T. N. Smirnova

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  1. T. N. Smirnova
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Original Russian Text © T.N. Smirnova, 2006, published in Paleontologicheskii Zhurnal, 2006, No. 1, pp. 64–71.

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Smirnova, T.N. New upper permian superfamily compositelasmatoidea (Brachiopoda, Terebratulida) from the east of the Russian platform: The specificity of ontogenetic transformations. Paleontol. J. 40, 66–74 (2006). https://doi.org/10.1134/S0031030106010072

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  • DOI: https://doi.org/10.1134/S0031030106010072

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