A.Cambrian period
B.Ordovician period
C.Triassic period
D.Silurian period
Related Mcqs:
- Cephalopod Molluscs were dominant during:
- Chordates as lower fishes in fresh water appeared in:
- Terrestrial Colonization started during:
- Coenozoic Era has periods namely:
- First land vertebrate originated during:
- The fishes dominated during:
- Trilobites and Brachiopods were dominant during:
- Fossil records indicate that insect evolved during:
- Non-chordates of all phyla flourished during the period:
- Oldest fossil belonged to the period:
