Goofs
The Expedition/Julie's Wedding/The Mongala/Julie's Replacement/The Three R's/The Professor's Wife: Part 1
The Love Boat
New Zealand doesn't have 'ranches'; we have farms and stations. Poor Patrick Duffy must never have heard a New Zealand accent either.
Professors Endler and Donner call the Mongala that they've captured the "missing link". Assuming that there really is a missing link, it would be a fossilized skeleton in a rock formation, and not some living creature. No reputable scientists would make such a ridiculous mistake.