In the orange corner... we have the Thing and Mister Fantastic, written by Marv Wolfman and drawn by Ernie Chan, Marvel Two-in-One #36, A Stretch in Time...
In the black corner... it's Batman and the Metal Men, written by Bob Haney and drawn by Bob Brown and Frank McLaughlin, Brave and the Bold #103, "A Traitor Lurks Inside Earth!"
... DING DING DING!
So if you remember, the Thing flew an experimental plane into the Bermuda Triangle and wound up 222 million years into the past and teamed up with Skull the Slayer. Dinosaurs were roaming the Earth in those days, and they made perfect targets for Ben Grimm's rock-throwing skills.
Ben is still hanging with Skull and Co., and the Slayer does show off a few cool acrobatic moves. Despite his natural ability, Ben doesn't seem to like him, and there's a lot of venomous banter going on. The rest guest-star is Reed Richards who, at this time in the FF's history, has grown weak. For some reason, he finds stretching extremely painful. So it's though blazing pain he fights dinosaurs. Props! The cover doesn't lie: He chokes out a pterodactyl. He also pulls a hard rubber ball trick!
The Metal Men are also at a strange place in their lives. For years now (because Haney doesn't believe in any sliding time scale), they've been trying to live among the humans because Doc Magnus is a puppet of a foreign dictator, somewhere. This is a product of how their original series ended, mid-story, with 1969's #41. Mercury is a vocal advocate of "Robot's Lib" and wants equal rights and opportunities for his people, and he convinces Gold, who had been living disguised as a human, to assemble the old team.
There are really two types of dinosaurs in this tale. The brontosaurus who, in addition to having been debunked by science (or at they back, Pluto-like, now?), are described by Skull as being too stupid to figure out people are meat and thus inedible unless they taste them, and really can't track/trample them if underwater. More impressive are the pterodactyls who can be organized into an air force by the Leopard Priest, who brings them to the 20th century!
Odds vs. Ends
From Marvel Two-in-One:
-Speaking of Wolfman's editorship... the issue ends with a big question mark re: the next issue's guest star! Did they just not want to say, or did Two-in-One go to press before the next issue was even scripted?!? I mean, Marvel wrote it too! Just a question. +0 points
From Brave and the Bold:
Farewells and Scoring
Maybe it's a Dinosaur Week miracle, but Mister Fantastic stretches just a little farther than the Metal Men combined, 21 to 20! And that allows Ben to close the gap a little bit, with the Dark Knight still leading 7 to 4. It's true what they say: Dinosaurs make everything better.