UPDATED:
I've officially launched and am sending my babies out into the world! Check it out and see if it's something you could use.
I'm currently working on completion of a Dinosaur Pack optimized for web and mobile applications. Currently I have two models completed, the Tyrannosaurus and the Pteranodon. The Pteranodon mesh came in at 570 polygons. The Tyrannosaurus mesh is 1,800 polygons. They both utilize 1024 x 1024 layered file textures. Each layer group is organized and appropriately named. The package will include a very optimal "Dino Shader", that includes rim lighting and a detail texture overlay. The detail texture overlay allows for some very neat customization for stripes, patterns, birthmarks, etc.
This is my current list of dinos:
1.) Tyrannosaurus Rex
2.) Pteranodon
3.) Brachiosaurus
4.) Velociraptor
5.) Stegosaurus
6.) Ankylosaurus
Of course each will have proper idle animations, walking, running, eating, and attacking.
Here are some preview images of the meshes and current textures.
Finished up the modeling and texturing part of the Brachiosaurus as well. 1,560 polygons, 1024x1024 diffuse texture. Moving on to modeling the Velociraptor shortly 
And a very high resolution screen capture from the Unity viewport.
This cuddly little guy is now modeled. 1,900 polygons. UVs and texturing in Photoshop left to do for today.
