Page 186 - The Origin of Birds and Flight
P. 186
(1)
(1) Changed in 1975 after the
American paleontologist Robert
T Bakker.
(2)
(2) Changed in 1979 after the American
paleontologist John H. Ostrom.
(3)
(3) Changed in 1980 after the
American paleontologist Paul
C. Sereno.
(4)
(4) Changed in 1991
after the American
paleontologist
Derek Briggs.
