Is that what these are called?  I've just been referring to them as Panosh Dinos.  

  I have several (although not as many as are in that picture!), and a few of the bootleg "Dino Brites" versions of the sculpts that are weird and mismolded, and made of a softer rubbery material.  
I don't know what they're worth (all of mine have been purchased for 10-25 cents each), but if you ever wanna get rid of 'em, let me know!