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・ Globidiellum
・ Globidonta
・ Globidrillia
・ Globidrillia ferminiana
・ Globidrillia hemphillii
・ Globidrillia micans
・ Globidrillia paucistriata
・ Globidrillia smirna
・ Globidrillia strohbeeni
・ Globifomes
・ Globig-Bleddin
・ Globigerina
・ Globigerina bulloides
・ Globigerinacea
・ Globigerinana
Globigerinida
・ Globigerinoides
・ Globin
・ Globin fold
・ GLOBIO
・ Globipes
・ Globis University Graduate School of Management
・ Globish
・ Globish (Gogate)
・ Globish (Nerriere)
・ Globisinum
・ Globitermes
・ Globitermes sulphureus
・ Globix Corporation
・ Globlex F.C.


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Globigerinida : ウィキペディア英語版
Globigerinida

The Globigerinida is a class of foraminiferans that are found as marine plankton. They produce hyaline calcareous tests, and are known as fossils from the Jurassic period onwards. The group has included more than 100 genera and over 400 species, of which about 30 species are extant. One of the most important genera is ''Globigerina''; vast areas of the ocean floor are covered with ''Globigerina'' ooze (named by Murray and Renard in 1873), dominated by the shells of planktonic forms.
==Description==
Globigerinids are characterized by distinctly perforate planispiral or trochospiral tests composed of lamellar radial hyaline (glassy) calcite, with typically globular chambers and single interiomarginal aperture. Some however have multiple or auxiliary apertures, and in some the aperture is areal or terminal in location. Some, also, have keels, reinforcing thickenings along exterior angles. An adaptation to the planktonic habit is the development of long narrow spines that support a frothy buoyant ectoplasm.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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