For now I stay on
Anomalocaris, but that was very hard.
I like
Helicoprion and the klipspringer for the way they kinda look like more well-known animals, but are actually subtly alien when you look closer ; meanwhile
Anomalocaris boldly go into the speculative evolution : what would terrestrial animals evolved from him would look like ?
Dryas iulia is more simple, an elegant addition to add a bit of personality to the voluntarily bland face of
P. specium.
As you know, one chosen part will actually give in-game a whole "evolutionary cloud" made of all the intermediate stages separating it from
P. specium and a few variants around the same general morphology, allowing a bit of flexibility inside a general "style".
Thinking about it, I see very well the
Anomalocaris head being co-opted by herbivores that would use its appendages to comb leaves or to exhume tubers.
Perhaps more surprisingly, I see a faint connexion between the anatomy of the
Helicorpion jaw and the molluscan
radula ; and between the collar of
Dryas iulia and that of
ceratopsidae (yeh, I know this last is a bit far-fetched. Also, the mouth itself is very different).
These kinds of links may be useful to have an elaborate web of evolutionary futures ...
