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Q: What are Foraminifera?
A: Marine protists with calcareous or agglutinated tests; benthic since Cambrian, planktonic since Mesozoic; form Globigerina oozes
Q: What are fusulinids?
A: Large benthic forams (Pennsylvanian–Permian), shaped like rice grains
Q: What are nummulitids?
A: Large coin-shaped forams, common in the Tertiary
Q: What are Radiolaria?
A: Siliceous, spiny, planktonic marine protists (Cambrian–Holocene), contributing to siliceous oozes
Q: What are the two orders of radiolarians?
A:
Spumellaria = spherical, dominate shelf/slope.
Nassellaria = conical/bilateral, dominate open ocean