The snail was introduced to earth in the Late Cambrien period.
a long time ago
Yes, snails can survive out of water for a period of time, but they need a moist environment to prevent dehydration.
No, aquarium snails cannot survive out of water for an extended period of time as they require a moist environment to breathe and move.
Ancient Greece
some time after the ancients XD
At the end of the Permian Period which was about 251 million years ago
Yes, but only for a short period of time. They are water snails, so if you keep it out of the water too long, it will die. This goes for all water snails.
From the 600s BCE.
A time period of the ancient Earth which had very stable climate
the moon
The period of Earth's time that would be considered longest is the Precambrian Era.
to let people know if the time period was before or after Jesus Christ.