1967's X-Men #34 was an early Marvel penciling assignment for Dan Adkins, and back then the fanzines quickly pointed out just how heavily he'd relied on reference--check out just a few examples below (there are many more in the issue; take a look through it). Naturally Adkins looked to the Kirby X-Men issues for guidance--but guess what comic the second panel (Angel flying) is based on.
|  | 
| 1967: X-Men #34  Dan Adkins | 
Okay, here's the breakdown:
|  | 
| 1967: X-Men #34  DanAdkins | 
 
Yes, the pose is a standard one. Adkins repositions Angel a bit.
|  | 
| 1965: X-Men #11  Jack Kirby | 
|  | 
| 1967: X-Men #34 Adkins | 
|  | 
| 1964: Tales of Suspense #60  Jack Kirby | 
|  | 
| 1967: X-Men #34 Dan Adkins | 
|  | 
| 1964: X-Men #8  Jack Kirby | 
|  | 
| 1967: X-Men #34  Dan Adkins | 
|  | 
| 1965: X-Men #10  Jack Kirby | 
Go to the head of the class if you remembered that Panel 2 has been featured on Panelocity😏