Yes, foraminiferans and radiolarians belong to the subphylum sarcodines. Both have skeletons that fossilize easily and have fossil records that date back to the Cambrian.
Radiolarians and Forminiferans.
protective shell in marine foraminiferans
they are eukaryotic
Silica
phylum Sarcodina
radiolarians
Dinoflagellates are both autotroph and heterotroph.
cells are in a amoeba
Amoebae, seaweeds, water molds, radiolarians, diatoms
Siliceous
An amoeba is a protist and a diatom is not