The genus Struthiochenopus (Gastropoda, Aporrhaidae): new Miocene records from southern Chile

The marine gastropod genus Struthiochenopus appears first in the late Cretaceous of the Antarctic Peninsula. Until the Oligocene only one or two species were extant at the same time. This changed drastically in the early Miocene when at least three species were living coevally in southern South Amer...

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Bibliographic Details
Published in:Journal of Paleontology
Main Authors: Nielsen, Sven N., Encinas, Alfonso
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2014
Subjects:
Online Access:http://dx.doi.org/10.1666/13-016
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000002353
Description
Summary:The marine gastropod genus Struthiochenopus appears first in the late Cretaceous of the Antarctic Peninsula. Until the Oligocene only one or two species were extant at the same time. This changed drastically in the early Miocene when at least three species were living coevally in southern South America. A possible fourth early Miocene species, Struthiochenopus sp., is known from Ipún Island, Chile, but its identification remains unclear. Another taxon, S. echtleri new species, described from Neogene deposits of Mocha Island, Chile, has no precise age available but it is likely the latest survivor of the genus.