Protists in the fossil record

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/protists-in-the-fossil-record

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific name?Protista (a kingdom of diverse eukaryotic microorganisms)
2. What are protists and why are they important in fossils?Protists are tiny single‑cell organisms that lived a long time ago. Their hard shells or skeletons can survive in rocks, giving scientists clues about ancient oceans and climates.
3. How do scientists find and read protist fossils?They look for tiny shells made of calcium carbonate, silica, or other materials in sedimentary rocks like chalk and limestone. By studying their shapes and patterns, scientists can tell when the rocks were formed.

Eukaryote: An organism whose cells contain a nucleus and other organelles enclosed within membranes.
Biostratigraphy: A field of paleontology that uses the fossil content of rocks to determine their relative ages and correlate them.
Paleoceanography: The study of the history of the oceans in terms of physical and chemical changes over time.
Isotopic Analysis: The study of the relative abundance of isotopes of elements to determine past environmental conditions.