posted on Feb, 10 2012 @ 03:27 AM
Great TED Talk about various dinosaurs that never actually existed but were only mistakenly recognized as unique, rather than belonging to another
type. There have been a few ATS threads about various mislabeled dinos but this is Horner's own presentation on the matter.
Available here> TED Talks: Jack Horner: Shape-shifting dinosaurs
Horner starts by noting 12 primary types of dinosaurs
He then points out that young and juvenile dinosaur bones are more spongy than adult bones.
Using a Triceratops as a model he starts out with three ages of "triceratops", incorrectly named as different species of dinosaurs!
Then points out that the "adult triceratops" actually has spongier bone than adult dinosaurs (even though the skull is two meters long!
in comes the Torosaurus which is actually
the full grown version! (although Horner thinks we should keep the triceratops
Three more dinosaurs were incorrectly identified when actually the same dinosaur (see what a benefit it is to cut these bones open!) : Dracorex
(young); Stygimoloch (Juvenile); Pachycephalosaurus (adult).
Horner ends his talk showing there are actually only 7 primary types of dinosaurs instead of 12 as people currently believe.
edit on 10-2-2012 by Thermo Klein because: (no reason given)