A.Cambrian period
B.Ordovician period
C.Permian
D.None of these periods
Related Mcqs:
- Diversification of brachiopods, copepods, primitive echinoderms and arachnids occurred in:
- Trilobites and Brachiopods were dominant during:
- The fishes dominated during:
- Cephalopod Molluscs were dominant during:
- Chordates as lower fishes in fresh water appeared in:
- Terrestrial Colonization started during:
- First land vertebrate originated during:
- Palaeozoic era does not include:
- In geological history of the earth, the beginning of birds and mammals occurred in:
- In which of the following periods, chordates originated:
