Monospecific phaeodarian radiolarian assemblages of Castanidium longispinum were suspended in plastic cages built with 225 μm nylon mesh at different water depths from 378 to 5582 m in the central North Pacific. Weight losses of these samples after a

Hand separated radiolarian skeletons, mainly from the Panama Basin PARFLUX sediment trap (5°21.8′N, 82°01.4′W) samples, were measured for length, width, and projected area (58 species), and weight (53 species). Volume and density contrast were computed.

Upper Cretaceous Phaeodarea (Radiolaria) were recovered from the Shoya Formation, which crops out 100 km northwest of Tokyo, central Japan. The Shoya Formation consists of about 600 m-thick marine sedimentary rocks, represented by alternating beds of

Biogenic silica (BSi) in marine sediments is an important indicator of siliceous organism distributions and paleoproductivities. Organisms that have BSi skeletons include diatoms, silicoflagellates, radiolarians and sponges. This study presents, for the

Taphonomy is a family of methods and concepts used by paleontologists, archaeologists, and forensics scientists for inferring a sequence of past events or processes that formed a collection of associated objects, such as vertebrate skeletons, mollusk

In marine ecosystems, many planktonic organisms precipitate biogenic silica (bSiO2) to build silicified skeletons. Among them, giant siliceous rhizarians (>500 μm), including Radiolaria and Phaeodaria, are important contributors to oceanic carbon pools

Groundwater fluctuation usually reflects the property of aquifer in nature. Actually, water level change can be caused not only by barometric pressure changes resulted from atmospheric motion, but also by the tidal effect from nearby marine system or