Fig. 8. Paleogene arrangement of Southern Gondwana with distribution of species of Pholadidea in The Weddellian Biogeographic Province from the Late Cretaceous–Paleogene. Abbreviations: 1, Pholadidea (Hatasia) wiffenae, Campanian–Maastrichtian; 2, Pholadidea frenguellii, Eocene; 3, Pholadidea patagonica, Oligocene–early Miocene; 4, Pholadidea gradzinskii, Oligocene; CAS, Central American Seaway; full arrows, possible dispersal route of Pholadidea from New Zealand to Antarctica/South America during the latest Cretaceous and the Paleogene (in the latest Cretaceous situation, New Zealand was immediately adjacent to Australia and Antarctica); stippled arrows, two possible dispersal routes of Pholadidea out from the Weddellian Biogeographic Province. Map adopted after Clarke and Crame (1989).

Published as part of Hryniewicz, Krzysztof & Gaździcki, Andrzej, 2016, A new sediment-dwelling pholadid bivalve from Oligocene glaciomarine sediments of King George Island, West Antarctica, pp. 885-896 in Acta Palaeontologica Polonica 61 (4) on page 893, DOI: 10.4202/app.00255.2016, http://zenodo.org/record/13264480