The Ordovician period came after the Cambrian period.
Carboniferous Silurian Ordovician Devonian Cambrian Pre Cambrian
Yes, the Cambrian Period was before the Mesozoic Era
Fish first appeared in the Cambrian period, long before the Devonian.
The only plant from the Cambrian period is algae.
The Ediacarian fauna are from the Cambrian Explosion. The Cambrian Explosion occurred in the Cambrian period. The Cambrian period was part of the Paleozoic era.
The Cambrian period occurred approximately 541 million years ago, marking the beginning of the Paleozoic Era. The Pre-Cambrian is a broad division of time before the Cambrian period, encompassing about 4 billion years of Earth's history, including the formation of the planet and the evolution of life prior to complex multicellular organisms.
There was no language used in the Cambrian period. Humans had not yet evolved.
The group of animalia (animals) did not fully form until the Cambrian period. There is evidence of simple life (single-celled) and small multi-celled life forms from before the Cambrian explosion.
Haikouichthys and Myllokunmingia were two vertebrates in the Cambrian Period
The Cambrian Period
I assume you are referring to the Cambrian Explosion... It was a period on Earth many millions of years ago after heavy bombardment from asteroids. A huge "explosion" of species and life came to form on Earth.