Radiolarian Research Articles

Mesozoic phosphatic and calcareous nodules containing well-preserved radiolarian fauna from the North Island, New Zealand

ニュージーランドには日本とよく似たチャート・砕屑岩を含む中・古生代の地質体が広く分布するが, 放散虫化石による生層序学的研究はようやく端緒に着いたばかりある. 我々は1995, 96年の2年にわたり, 国際学術研究 (代表: 酒井豊三郎)による, ニュージーランドの中生界を中心とした含放散虫岩の調査を行った. その結果のうち, ワイパパ, ムリヒク両テレーンの, 中生代南半球の極めて保存のよい放散虫化ヨを産するノジュールの産状を紹介する.

A New Early Devonian Radiolarian Genus From Western Yunnan

A New Early Devonian Radiolarian Genus From Western Yunnan

DISCOVERY OF EARLY CAMBRIAN RADIO-LARIA AND ITS SIGNIFICANCE

The well-preserved bivalved microfossils collected from the Lower Cambrian limestone at theXiaoyang section in Zhenba, Shaanxi, have proved the oldest known radiolarians by meansof the electron probing analysis and morphological study under the electron scanning miroscopeand the observation of the thin section. The present discovery has shaken the theory thatThaeodaria originated from Spumellaria. Unlike the Mesozoic and Cenozoic radiolarians that areplanktonic, the Cambrian ones lived as benthos. On the basis of the chemical composition andmorphological features of these radiolarians a new genus Eoconcharium and a new family Eocon-chariidae are erected.

New radiolaria from the Ladinian substage (Middle Triassic) of Slovenia (NW Yugoslavia)

New radiolaria from the Ladinian substage (Middle Triassic) of Slovenia (NW Yugoslavia)

Radiolarian Revolution in the study of Japanese Paleozoic-Mesozoic

Radiolarian Revolution in the study of Japanese Paleozoic-Mesozoic

CHERTS AND GEOCHEMISTRY OF STRATABOUND URANIUM ORE DEPOSIT OF CHERT TYPE

In this paper, the characteristics of various types of cherts are described, and the clas-sification and origin of bedded cherts are discussed. The author suggests that most of thebedded cherts are generated from the accumulation of died organism, such as radiolarians,diatoms and siliceous sponge spicules, which have imbibed silica from sea water before dy-ing. Concerning the geological and geochemical features and the origin of the strata-bounduranium ore deposit of chert type, a special emphasis is put on the discussions about the for-mation of ore-source beds and the relationship between uranium deposits and crustal move-ment.

Diagenetische Veränderungen an Radiolarien- und Schwammspicula-führenden Gesteinen der Strubbergschichten (Jura, Nördliche Kalkalpen, Österreich)

Diagenetische Veränderungen an Radiolarien- und Schwammspicula-führenden Gesteinen der Strubbergschichten (Jura, Nördliche Kalkalpen, Österreich)

Vertical Flux of Radiolaria: A Taxon-Quantitative Sediment Trap Study from the Western Tropical Atlantic

Vertical Flux of Radiolaria: A Taxon-Quantitative Sediment Trap Study from the Western Tropical Atlantic

Five New Eocene Radiolarian Species from the Norwegian Sea

Two new spumellarians, three new nasellarians, Calocyclas talwanii, Lophocorys norvegiensis, Theocalyptra tetracantha, Stylodictya variabilis, Spongopyle spiralis, two zones, late Eocene, Atlantic Ocean

Post-Eocene "Closed" Theoperid Radiolarians

Post-Eocene "Closed" Theoperid Radiolarians

The Relationship between the Genus Albaillella Deflandre and the Ceratoikiscid Radiolaria

The Relationship between the Genus Albaillella Deflandre and the Ceratoikiscid Radiolaria

Some Foraminifera, Radiolaria and Ostracoda from the Cretaceous of Minnesota

Some Foraminifera, Radiolaria and Ostracoda from the Cretaceous of Minnesota

A Study On the Radiolaria as the Index-Fossil

A Study On the Radiolaria as the Index-Fossil

51. The Permo-Triassic Break in the History of Radiolaria Supplemented with the Sambosan-Higashigawa Suite

51. The Permo-Triassic Break in the History of Radiolaria Supplemented with the Sambosan-Higashigawa Suite

50. Reciprocal Development of Radiolarian Rocks as between Asiatic and Australian Sides

50. Reciprocal Development of Radiolarian Rocks as between Asiatic and Australian Sides

Professor Haeckel on the Orders of the Radiolaria 1

Professor Haeckel on the Orders of the Radiolaria 1

Professor Haeckel on the Orders of the Radiolaria 1

[THE following translation of a recent paper of mine, by Miss Nellie Maclagan, has been revised by myself.—ERNST AECKEL.]