Mesozoic Radiolaria in the Atlantic Ocean off the Northwest Coast of Africa, Deep Sea Drilling Project, Leg 41

Abstract

Radiolaria from Hole 367 (Neocomian/Late Jurassic) and Hole 396A (Late Cretaceous) are described and their occurrences and abundances tabulated. Previously established ranges for some of the taxa are refined, and from Hole 369A, six new species and two new subspecies are described.

Cretaceous Radiolaria from the Weddell Sea: Leg 113 of the Ocean Drilling Program

“…The radiolarians are abundant and well preserved in the section ( Morin, 1981;Foreman, 1977Foreman, , 1978Pessagno, 1976Pessagno, , 1977Sanfilippo and Riedel, 1985). However, the assemblage seems to suggest Maestrichtian in age.…”

“…High-latitude assemblages, however, are poorly known, particularly from the Antarctic region with few reports of moderately preserved, primarily Late Cretaceous temperate assemblages (Riedel and Sanfilippo, 1974;Pessagno, 1975;Foreman, 1978a). The recovery of unusually well preserved Cretaceous radiolarian assemblages from the Weddell Sea of the Antarctic Ocean during Leg 113 provides substantial new taxonomic, paleobiogeographic, and biostratigraphic data to fill this informational gap.…”

Preliminary report on the radiolarian age of the Upper Cretaceous Matoya Group (Shimanto belt) in the Toba District, Mie Prefecture, Southwest Japan

“…aff. A. tylotus (Foreman 1978) (Plate 1, figs. 31-32) Remarks: The obtained specimens are similar to Amphipyndax tylotus in general form.…”

“…11. Remarks: According to Foreman (1978), Stichomitra manifesta is distinguished from other species of Stichomitra by having a large hemispherical thorax greater in length than the succeeding segments, and in the usual case, test is composed of four or five segments, but rarely of seven. The examined specimens possess four segments, except for the specimen illustrated in plate 3, fig.…”

“…aff. T. veneta (Squinabol 1903) + Amphipternis stocki (Campbell and Clark 1944) + + + + + + Amphipyndax tylotus Foreman 1978 + Amphipyndax sp. aff.…”