Lower Cretaceous radiolarians from the northwestern Australian margin, supplement to: Baumgartner, Peter O (1992): Lower Cretaceous radiolarian biostratigraphy and biogeography off northwestern Australia (ODP sites 765 and 766 and DSDP Site 261), Argo Abyssal Plain and lower Exmouth Plateau. In: Gradstein, FM; Ludden, JN; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 123, 299-342

Peter O Baumgartner
During Leg 123, abundant and well-preserved Neocomian radiolarians were recovered at Site 765 (Argo Abyssal Plain) and Site 766 (lower Exmouth Plateau). The assemblages are characterized by a scarcity or absence of Tethyan taxa. The Berriasian-early Aptian radiolarian record recovered at Site 765 is unique in its density of well-preserved samples and in its faunal contents. Remarkable contrasts exist between radiolarian assemblages extracted from claystones of Site 765 and reexamined DSDP Site 261, and faunas...
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