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Yagonia Roberts (Brachiopoda: Chonetidina) from the Malimán Formation, Lower Carboniferous of western Argentina: Palaeobiogeographical implications

Journal Article


Abstract


  • A new anoplid chonetid species, Yagonia furquei sp. nov., is described from the Lower Carboniferous (late Tournaisian-early Visean) Maliman Formation of western Argentina. The associated temperate 'Malimanian' fauna is suggested to indicate an initial biotic segregation that took place in western Gondwana (southwestern South America), a palaeobiogeographic event that predated the late Visean global cooling and associated major palaeolatitudinal biotic differentiation. Occurrences of Yagonia are here interpreted as evidence of a 'south to north' faunal migration pathway, here named the Austropanthalassic-Rheic oceanic corridor, established in western Gondwana during the late Early Carboniferous. © 2009 Association of Australasian Palaeontologists.

Publication Date


  • 2009

Citation


  • Taboada, A. C., & Shi, G. R. (2009). Yagonia Roberts (Brachiopoda: Chonetidina) from the Malimán Formation, Lower Carboniferous of western Argentina: Palaeobiogeographical implications. Alcheringa, 33(3), 223-235. doi:10.1080/03115510903043473

Scopus Eid


  • 2-s2.0-70349971989

Start Page


  • 223

End Page


  • 235

Volume


  • 33

Issue


  • 3

Abstract


  • A new anoplid chonetid species, Yagonia furquei sp. nov., is described from the Lower Carboniferous (late Tournaisian-early Visean) Maliman Formation of western Argentina. The associated temperate 'Malimanian' fauna is suggested to indicate an initial biotic segregation that took place in western Gondwana (southwestern South America), a palaeobiogeographic event that predated the late Visean global cooling and associated major palaeolatitudinal biotic differentiation. Occurrences of Yagonia are here interpreted as evidence of a 'south to north' faunal migration pathway, here named the Austropanthalassic-Rheic oceanic corridor, established in western Gondwana during the late Early Carboniferous. © 2009 Association of Australasian Palaeontologists.

Publication Date


  • 2009

Citation


  • Taboada, A. C., & Shi, G. R. (2009). Yagonia Roberts (Brachiopoda: Chonetidina) from the Malimán Formation, Lower Carboniferous of western Argentina: Palaeobiogeographical implications. Alcheringa, 33(3), 223-235. doi:10.1080/03115510903043473

Scopus Eid


  • 2-s2.0-70349971989

Start Page


  • 223

End Page


  • 235

Volume


  • 33

Issue


  • 3