Welcome to the discussion thread for the story, How a 70-Year-Old Dino-Size Mystery May Have Finally Been Solved. You can share your comments and thoughts about the story in the conversation below.
I think Nanotyrannus is still valid. Some reasons are there teeth base are pinched instead of round like T. rex, also there lower jaw is a lot thinner than that of T. rex. Some more reasons are there finger bones are longer then a rex and last but not least there claws are not the same.
I would agree with kalebgage55. I have seen the hand bones of a nano and compared to those of a full grown T. Rex they are almost double in length. It makes no sense that the juvenile T. Rex’s hand bones would shrink as they get older.
Do fossils have viable DNA,? They could just compare the two.
Fossils rarely have D.N.A and since dinosaur fossils are so old there D.N.A is extremely rare so it would be very hard.