Foraminiferans. Allana Jones 3 rd Period. Small organisms with shells Shells are often porous or open (like tubes or hollow spheres) Very small marine creatures (can only reach around 20 cm)
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Comes from organisms that have shells mainly consisting of Calcium (Calcium Carbonate- CaCO3)
Sometimes calcareous ooze will have traces of foraminifera shells in it
When foraminifera die, their shell will sink and therefore lead to calcareous ooze
Ooze can eventually lead to sedimentary rock