New brachiopod species from the order acrotretida from the Cambrian of central Kazakhstan |
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Authors: | S P Koneva G T Ushatinskaya |
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Institution: | 1.Borissiak Paleontological Institute,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | Four new brachiopod species from the order Acrotretida (class Lingulata): Picnotreta saryarkensis sp. nov., Stilpnotreta propria sp. nov., Anabolotreta firma sp. nov., and Batenevotreta variabilis sp. nov. are described from the Agyrek Mountains, northeastern Central Kazakhstan from two olistoliths of limestones, which
contain the uppermost Middle and lowermost Upper Cambrian fauna and are located in the Upper Ordovician olistostrome. These
new species supplement the described earlier brachiopod assemblage from this region (Koneva and Ushatinskaya, 2008). Strong
age and intraspecific variability of some Kazakh acrotretids is shown. |
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