thay were around when there were dinosrs
since right after a sharks came into being
No. Sharks appeared on earth long before the first dinosaurs did.
They say sharks have existed for 409 million years, a very successful species to have survived that long indeed.
around 400 million years
yes they can live on earth
They survived by eating other sea animals.
When the meteor hit earth 65,000,000 years ago nothing over 2.5 Kg survived except in the ocean where the weight was a bit greater... maybe 30Kg so the large sea reptiles died but the sharks didn't.
they just servived ok. stop asking.
The plants of the Devonian period were very small. The animals that survived were cartilaginous fish like sharks and rays. Some squid and octopus survived as well.
sharks
Not long unless they are freshwater sharks
tiger sharks teeth are about 3inches long