A Distinctive Form of This Pictured Organism Is Found in Each

Multiple Choice

A distinctive form of this pictured organism is found in each geologic period. Which statement(s) about this organism is/are true? 8-26-2013

A) The organisms pictured are foraminiferans, members of Supergroup Rhizarian and have a skeleton called a test.
B) These organisms may be used as index fossils to date sedimentary rock.
C) The Egyptian pyramids are built of this type of limestone.
D) All of the answer choices are correct.
E) The organisms pictured are foraminiferans, members of Supergroup Excavates.