The distribution of the gondwanine ostracod Rostrocytheridea Dingle: palaeozoogeographical implications

• Published in: Geological Journal
• Main Authors: Ballent, Sara C., Whatley, Robin
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2007
• Subjects: Antarctic; Antarctic Peninsula; Argentina; Dingle; Patagonia; Antarc*
• Online Access: http://dx.doi.org/10.1002/gj.1067; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.1067; https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.1067

Abstract The genus Rostrocytheridea is strictly gondwanine in its distribution and, in Argentina, is shown to be restricted to Patagonia. Of the six recorded Argentinian species, five are restricted to the southern part of South America: Rostrocytheridea opisthorhynchus nov. sp. (late Tithonian‐Berriasian), Rostrocytheridea sp. (Valanginian), Rostrocytheridea cerasmoderma nov. sp., Rostrocytheridea covuncoensis Musacchio (Hauterivian) and Rostrocytheridea ? sp. (Campanian). One species, Rostrocytheridea ornata Brenner and Oertli, is of much wider distribution, occurring in the Neocomian of South Africa and the Hauterivian of central‐west Argentina. In Australia, the genus first appears in the Albian‐Cenomanian and ranges up to the Santonian with two species: Rostrocytheridea canaliculata Bate and Rostrocytheridea westraliensis (Chapman). The youngest record of the genus is R. hamiltonensis Fauth and Seeling from the Middle to Upper Campanian of the James Ross Basin, Antarctic Peninsula. The implications for intercontinental correlation and the reconstruction of palaeo‐migration routes are considered. Copyright © 2007 John Wiley & Sons, Ltd.