Dinosaurus!

(1960)
Directed by Irvin S. Yeaworth, Jr.
Written by Jack H. Harris, Dan E. Weisburd, Jean Yeaworth
Starring Ward Ramsey, Paul Lukather, Kristina Hanson, Alan Roberts. Gregg Martell, Alan Roberts
IMDB Entry
I don’t particular like scary movies.  To me, they are like a practical joker tripping you as you walk by – my main emotion is annoyance, not fright.  There is only one movie that actually scared me when I saw it, and that was Dinosaurus!  It probably was because I was eight at the time, because watching it today makes it only seem silly. 
But fun.
In the movie a group of Americans are working on a Caribbean island, when they stumble across a find:  two dinosaurs and a cave man (Gregg Martell),* all exceptionally well preserved.  During a storm, they are struck by lightning and, as Dr. Henry** Frankenstein proved, lightning brings the dead back to life.  So a giant brontosaurus*** is roaming the island, along with – of course – a tyrannosaurus rex.****
Meanwhile the cave man becomes friends with a boy of the island, Julio (Alan Roberts) and suffers from the culture shock of 20th century civilization.
The cave man scenes are played for broad comedy and are generally effective, while the dinosaur attacks, which may seem frightening when you’re eight, don’t really hold up.  Still, the special effects were well done for the day.
Director Yeaworth had already made his mark on the monster movie genre a couple of years earlier with The Blob.  None of the cast had particularly memorable careers, though a few worked semi-regularly as TV guest stars.
But for several months afterwards, I would look outside to see if a T. Rex was coming.
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*Yes, I know that’s an anachronism, but for sticklers for scientific accuracy, this is the least of their worries.
**His name in the James Whale/Boris Karloff classic.
***That’s what they called it in 1960, and I’m sticking to it.
****Has there ever been a dinosaur movie without a T. Rex?