First records of brachiopods of the family Discinidae (Class Lingulata) from the Upper Jurassic of West Siberia


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The organophosphatic brachiopods of the superfamily Discinoidea, family Discinidae are described from the Upper Jurassic of West Siberia. The protegulum (embryonic shell) preserved in adult shells is for the first time discovered in Mesozoic discinids. The shell microstructure is studied. A new species, Discinisca undata Smirnova, sp. nov., is established.

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T. Smirnova

Moscow State University

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Email: smirnovatatiana76@bk.ru
俄罗斯联邦, Moscow, 119992

G. Ushatinskaya

Borissiak Paleontological Institute

Email: smirnovatatiana76@bk.ru
俄罗斯联邦, Profsoyuznaya ul. 123, Moscow, 117997

E. Zhegallo

Borissiak Paleontological Institute

Email: smirnovatatiana76@bk.ru
俄罗斯联邦, Profsoyuznaya ul. 123, Moscow, 117997

I. Panchenko

Moscow State University

Email: smirnovatatiana76@bk.ru
俄罗斯联邦, Moscow, 119992

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