an animal fossil only shows up in lower rock layers. what does this likely mean? 1. the animal still exists…

an animal fossil only shows up in lower rock layers. what does this likely mean? 1. the animal still exists today. 2. the animal was able to escape getting buried. 3. the animal has become extinct. 4. the animal evolved recently.
Answer
Brief Explanation:
Fossils in lower rock layers are older. If an animal fossil is only found in lower layers, it likely no longer exists as it hasn't left fossils in more recent (upper) layers, indicating extinction.
Answer:
- The animal has become extinct.