fˈɔːɹɐmˌɪnɪfɚɹə ʃˈɛlz ɑːɹ kəmpˈoʊzd ʌv kˈælsiəm kˈɑːɹbənˌeɪt kˈɑː sˌiːˈoʊ θɹˈiː ænd ɑːɹ fˈaʊnd ɪn mˈɛni kˈɑːmən dʒˌɪəlˈɑːdʒɪkəl ɛnvˈaɪɹənmənts.
Foraminifera shells are composed of calcium carbonate (CaCO3) and are found in many common geological environments.