Draste ties to the correct boxes to complete the pairs
North each oth the layer where it be present based on these conditions
- Desurssted before birds
- Corals existed between trilobites and amphibians.
- Totes are the oldest fossils
- Dinosaurs are younger than amphibians
- Sisare the youngest species to be observed in this stratum
Layer a is the top layer
corals
dinosaurs
birds
amphibians
Trilobites