Here's a graphic distributed by the University to accompany this announcement (Bell is the fellow below the dueling Gorgos):
When I first saw it, I thought to myself, "David, that illustration looks strangely familiar. It reminds me (and therefore you) of another artist's style." It didn't take long for me to figure it out: it looks like it could be the work of one Nicholas Gurewitch, whose now-on-hiatus comic Perry Bible Fellowship is wonderful, cool, and supremely fabulous to the extreme.
Here's an example of a dinosaur in his work. Maybe I'm nuts, but Philip Bell's drawing looks like what Gurewitch might do if he tried his hand at scientific illustration. I guess it's the stippling and the prominent outline. I'm not accusing Bell of using a ghost-artist, but I wouldn't be surprised if he was influenced by Gurewitch. It's probably just a coincidence, but I'm going to go ahead and email Bell to find out. If the response is interesting enough, I'll post it here.
UPDATE: Heard back from the man. No connection. Pure coincidence.