[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: unusual question



The high Brain to Body Mass Ratio of Troodontids has frequently been used
to show that Dinosaurs "the bird predecessors" had already developed the
large brain seen in birds and therefore were capable of some of the
advanced behavioral attributes seen in birds particularly ostriches. 
However the brain to body mass of Troodontids was still considerably
smaller than ostriches-the birds that have the smallest brains. Even more
importantly in ostriches the head size is considerably out of proportion
to the rest of the body due to sexual selection for large body size after
becoming flightless. It is likely that the difference in brain power
between a troodontid and an ostrich was vast.

                                        Kurt Shipley
                                        Graduate Student
                                        Biology Dept. 
                                        Duquesne University