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Cobras and other modern snakes were represented by their ancestors that may have had legs and more closely resembled lizards. Those that were adapted to living underground eventually found limb reduction, scales replacing eyelids and thinner bodies to be an advantage for burrowing. By living underground they would be able to avoid predation from and competition with the dinosaurs who were certainly sharing the ecosystem.
Current theory points to global catastrophic climate change, possibly resulting from a meteoric impact, to be the cause of the mass extinction of the dinosaurs some 65 million years ago. Those animals that would have survived to re-populate the earth would have been presented with open niches and no competition. Ancestral snakes would have returned to the surface from their underground tunnels to find ample opportunity to evolve into modern snake forms such as the cobra.
So to answer your question, there were no cobras around with the dinosaurs, but the ancestors of the cobras were around toward the end of the dinosaurs' tenure. The first cobras evolved around 25 million years ago.
What else can I help you with?
Are dinosaurs stil alive?
No dinosaurs are not still alive there are some relatives of dinosaurs that have been alive since dinosaurs like alligators and crocodiles even tigers and elephants.
Are parrots in the time when dinosaurs were alive?
In the sense that birds are dinosaurs, and thus that dinosaurs are still alive, yes. However they were not alive when non-avian dinosaurs were around. Parrots did not evolve until a few million years after non-avian dinosaurs died out.
When dinosaurs were alive was people to?
yes, cavemen were alive.
Are there dinosaurs alive in 2012?
no there are not
What era did dinosaurs begin to exist?
in the era of awesomeness when dinosaurs were alive.
What actors and actresses appeared in Dinosaurs Alive - 2007?
The cast of Dinosaurs Alive - 2007 includes: Michael Douglas as Narrator
Is a dinosor smarter than a ape?
dinosaurs are not alive anymore so, apes are smarter or if dinosaurs were smart they would be alive
How old is meteora?
when dinosaurs were alive
Where there lemurs alive with dinosaurs?
No of coarse not
What are the prehistoric events?
When the dinosaurs were alive.
Why are dinosaurs not a live anymore?
alive*
What did dinosaurs eat when they were still alive?
They ate plants, fruits and other dinosaurs.
