[saluki]

It could have been a simple misunderstanding and your boss crediting the wrong person.

In the big picture these things don't matter a whole lot, I wouldn't take the time to discuss it with your boss any further.

Maybe talk to your teammate and see if he was trying to take credit for it or if it just happened to look that way.

Try to bring up more what you are working on and ideas you are executing on with your team and boss in the future.

kudos are nice but very minor in the big scheme of things. You are all cogs in a machine to your company and boss. So I wouldn't let it get you down and it's not worth making waves over.