Linguloidean brachiopods from the Lower Ordovician (Tremadocian) of northwestern Argentina

Danish medical bulletin

Benedetto JL¹  Muñoz DF¹ 

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关键词: linguliform brachiopods;    Ordovician;    Argentina;    biogeography;   

DOI  :  

学科分类：医学（综合）

来源: Den Almindelige Danske Laegeforening

【 摘 要 】

The new obolid Torobolus subplanus gen. et sp. nov. from the lower Tremadocian Devendeus Formation, and the the new species Libecoviella tilcarensis and Leptembolon argentinum from the upper Tremadocian Santa Rosita Formation are described and illustrated. Libecoviella is typical of the upper Tremadocian Třenice Formation and Floian Klabava Formation of the Prague Basin and has been reported recently from Australia. Leptembolon has been recorded in the same Bohemian formations, but together with other taxa it forms the Thysanotos-Leptembolon Association present in northern Estonia and a series of high-latitude terranes. The record of Leptembolon and Libecoviella in the high- to temperate- latitude Central Andean region points to a peri-Gondwanan distribution of these genera. The presence of Bohemian- like obolids in northwestern Argentina suggests a migratory route linking the Central Andean Basin with north Gondwana and Perunica along the clastic platforms fringing the North African and Brazilian shields.

【 授权许可】

Unknown