Missing Challenger Trophy (Bestiary)

Hi,

I don't see the small base Bestiary trophy in my decorations list.

I was late to the Bestiary league. I took a break from the game and arrived within the last 2-3 weeks of Bestiary. I reached end-game and attained a high level, completed 30% of the Atlas and completed a few challenges before the league ended.

Shouldn't I get the small base trophy just for participating?

Thanks,
-David