Massacre in Dinosaur Valley (1985)
Spent the afternoon watching "Massacre in Dinosaur Valley" and it's AWESOME! A daredevil paleantologist (you know the kind) crashlands in the Amazon (a spectacular model plane effect) and spends the next 90 minutes fighting off piranhas, alligators, boa constrictors and cannibals from the Oogah-Boogah tribe. His companions include a couple of fashion models, a Vietnam vet and his boozy, bleach-blonde wife Betty who fell into the quicksand way too soon. Lots of boobs, bush, blood (there was a great heart-eating scene) and, despite the unlikely surroundings, even some lezzing.