Radiolarians in the Sedimentary Record
CRC Press, 28 feb. 2002 - 533 pagina's
Radiolarians in the Sedimentary Record presents the current state of knowledge on fossil radiolarians. The author discusses the record, as well as new integrated taxonomic systems at the family level. The book provides comprehensive coverage of the fossil record of these unicellular organisms. It also discusses their important role in the history of the Earth and their development of the biosphere. This text will prove indispensable for graduate students and researchers in geology, oceanography and earth sciences.
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abundance apical spine appearance arches areas arms assemblages bars basal boundary Carter central cephalis chambers changes characteristic connected considered consisting cortical shell Cretaceous cytoplasm defined Definition Deflandre deposits developed distribution Dumitrica Early Ehrenberg emend evolutionary Family faunas figure Foreman forms fossil four girdle Haeckel Included genera initial spicule interval Jurassic KIMMERIDGIAN known Kozur and Mostler Last appearance Late lateral latticed layer limit living lower medullary shell Mesozoic microsphere Middle Triassic nassellarians Nazarov and Ormiston occurrence oceanic organic origin Palaeozoic patterns Permian Pessagno Petrushevskaya placed plane plankton pores present preserved primary radiolarians Range Recent record relatively Remarks represented resulting Riedel ring rocks samples Sanfilippo sediments segments showing siliceous similar skeleton specimen spines spongy Spumellaria stratigraphic structure studies Subzone surface taxa thorax Type genus type species upper usually wall Wever Zone