Jamie Zawinski, one of the founders of Netscape and later Mozilla, has dug up the original versions of the iconic Mozilla dinosaur logos, and posted them online in all their glory. While he strongly believes Mozilla owned these logos outright, and that they were released as open source in 1998 or 1999, he can’t technically prove that.
It has come to my attention that the artwork for the original mozilla.org “dinosaur” logo is not widely available online. So, here it is.
As I explained in some detail in my 2016 article “They Live and the secret history of the Mozilla logo”, I commissioned this artwork from Shepard Fairey to use as the branding of the newly-founded mozilla.org and our open source release of the Netscape source code, which eventually became Firefox. This happened in March 1998.
↫ Jamie Zawinski
The original Mozilla dinosaur logos are works of pure art. They sure don’t make logos like this anymore.

I remember these. They were wonderful.
Zawinski is a legend. His blog is very entertaining and his passion when it comes to xscreensaver is fun to follow.