Which land reptiles were present $200$ million years ago?

From which animals did amphibians evolve?

The fish-like giant reptile which existed $200$ million years ago (mya) was:

Birds are evolved from:

The origin of seeds in land plants was achieved about $345 \; \text{million}$ years ago, in lineages recognized as ancestral to all more advanced vascular plants in:

In which geological period did the dinosaurs become extinct?