Journal
JOURNAL OF PALEONTOLOGY
Volume 90, Issue 6, Pages 1068-1080Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jpa.2016.111
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- CONICET [PIP 112-201101-00803]
- IGCP [653]
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Middle Ordovician lingulacean, trematid, and craniid brachiopods are described and illustrated for the first time from the uppermost part of San Juan Formation limestones of the Precordillera Basin, west-central Argentina. Sampled beds fall within the Ahtiella argentina brachiopod Zone, which, according to associated conodonts, is of early-mid Darriwilian age. The fauna consists of the linguloideans Glossella cuyanica n. sp. and Lingulasma? sp., the discinoidean Trematis sp., the siphonotretid Chilcatreta tubulata n. gen. n. sp., and a conical shell that is referred provisionally to the order Craniida. The linguliforms from the Cuyania (Precordillera) terrane, although still poorly known, display close similarities to those inhabiting low-to-intermediate latitude palaeocontinents, particularly Laurentia and Baltica, in accordance with evidence from rhynchonelliform brachiopods.
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