The sticking point is that "Vegan" comes from a script direction, and all the other new alien species' names (including "Rhaandarite") come from Fletcher & Phillips' notes in the production materials (and the LA Times Syndicate comic strip and Marvel's comic), but at Memory Alpha script trumps other sources when nothing canonical is evident.
I would prefer they'd left the entry at "Rhaandarite", since the titles of Fletcher's drawings indicate that Vegans became Rhaandarites very early in production. And yes, Walter Koenig's "Chekov's Enterprise" diary relates the anecdote of "the geek" being used on set.
I was never under the impression that Billy Van Zandt's character in TMP was Dobius the Tanian. That book character had a "bifurcated head". At the time of the publication of "Triangle", I recalled it was an odd choice since the most bifurcated TMP alien was the fluorine-breathing Zaranite - and M&C had chosen to make their Zaranites (in "Triangle") oxygen-breathing humanoids. (IIRC, they also assumed that TOS Catullans were cat-like.)
I would prefer they'd left the entry at "Rhaandarite", since the titles of Fletcher's drawings indicate that Vegans became Rhaandarites very early in production. And yes, Walter Koenig's "Chekov's Enterprise" diary relates the anecdote of "the geek" being used on set.
I was never under the impression that Billy Van Zandt's character in TMP was Dobius the Tanian. That book character had a "bifurcated head". At the time of the publication of "Triangle", I recalled it was an odd choice since the most bifurcated TMP alien was the fluorine-breathing Zaranite - and M&C had chosen to make their Zaranites (in "Triangle") oxygen-breathing humanoids. (IIRC, they also assumed that TOS Catullans were cat-like.)