the land of the lost, oh how i loved that show.
reptoids show up in Dr Who, as well including aquatic varients.
http://en.wikipedia.org/wiki/Doctor_Who_and_the_Silurians
http://en.wikipedia.org/wiki/The_Sea_Devils
and i can recommend Harry Harrison's ( of Stainless steel rat fame)
west of eden series of books
http://en.wikipedia.org/wiki/West_of_Eden
ive always found the idea plausible
reptoids show up in Dr Who, as well including aquatic varients.
http://en.wikipedia.org/wiki/Doctor_Who_and_the_Silurians
http://en.wikipedia.org/wiki/The_Sea_Devils
and i can recommend Harry Harrison's ( of Stainless steel rat fame)
west of eden series of books
http://en.wikipedia.org/wiki/West_of_Eden
ive always found the idea plausible