Match each fossil with the layer where it'll be present based on these conditions: Dinosaurs existed before birds. Corals existed between trilobites and amphibians. Trilobites are the oldest fossils. Dinosaurs are younger than amphibians. Birds are the youngest species to be observed in this stratum. Layer A is the top layer. corals trilobites dinosaurs birds amphibians layer A arrowRight layer B arrowRight layer C arrowRight layer D arrowRight layer E arrowRight