tompagenet2

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The reassignment of Brachiosaurus brancai to its own genus occurred through a series of steps by different paleontologists:

## Initial Classification In 1914, Werner Janensch first described the African species as Brachiosaurus brancai, considering it part of the existing Brachiosaurus genus[4].

## Path to Reclassification Gregory S. Paul made the first step toward separation in 1988 by proposing a subgenus classification, Brachiosaurus (Giraffatitan) brancai, after noticing significant skeletal differences[4][10].

George Olshevsky then elevated Giraffatitan to full genus status in 1991, though this change was largely disregarded by the scientific community at the time[4][10].

## Formal Establishment The definitive separation came in 2009 when Michael P. Taylor published a detailed study demonstrating 26 distinct osteological differences between the African and American species. This comprehensive analysis firmly established Giraffatitan as a separate genus, creating the combination Giraffatitan brancai[3][4]. From 2012 onward, most researchers have accepted this classification[10].