I want to know the answer to the following question:
Fossils found in the Tonian period indicate the presence of what creatures?
All the background I'm provided with is that "However the discovery that tracks very similar to these early trace fossils are produced today by the giant single-celled protist Gromia sphaerica casts doubt on their interpretation as evidence of early animal evolution.". Is that enough to answer the question?
Answer: no