A controversial new theory posits that as many of a third of dinosaurs species have been miscategorized. Rather than separate species they are just the juvenile versions of already identified dinosaurs.
National Geographic explains the reason:
… young dinosaurs didn’t look like Mini-Me versions of their parents, according to new analyses by paleontologists Mark Goodwin, University of California, Berkeley, and Jack Horner, of Montana State University.
Instead, like birds and some other living animals, the juveniles went through dramatic physical changes during adulthood.
This means many fossils of young dinosaurs, including T. rex relatives, have been misidentified as unique species, the researchers argue.
Hmm … think the parents out there would understand this.
Who hasn’t felt their children are an entirely new species? 
