5
/2009
6.2
/2008
9.5
/2004
7.9
/2013
0
/2023
6.702
/2004
8.5
/2014
6.5
/2018
6.71
/2017
7.146
/2023
6.9
/2021
8
/2014
3.2
/2006
5.25
/2014
6.773
/1971
6.161
/2022
4.864
/1888
Narrator
Himself - Denver Museum of Nature & Science
Himself - University of Michigan
Himself - Denver Museum of Nature & Science
Himself - Vertebrate Paleontologist
Himself - United States Geological Survey
Himself - Denver Museum of Nature & Science
7.7
/2009
6.7
/2020
7
/2022
8
/2013
7.1
/2013
7.2
/2008
0
/1989
0
/1999
0
/2001
8
/2011
0
/2023
5.4
/2007
6
/1963