Much later on, during show-and-tell, Calvin displayed a fragment of jawbone fossil he found in his front yard. He realized it belonged to a new dinosaur species. He also produced a dramatic illustration of the complete Calvinosaurus, which was very large, not too much unlike the version that appeared in his imagination. For reasons unknown, his demonstration had him sent to Principal Spittle. Curiously, Calvin claimed that he would be publishing his findings shortly, yet there is no proof that he followed through with this.