I asked ChatGPT+ using Scholar GPT as GPT. This is the answer I got back, not too bad: The species Brachiosaurus brancai was reassigned to its own genus, Giraf

I asked ChatGPT+ using Scholar GPT as GPT. This is the answer I got back, not too bad: The species Brachiosaurus brancai was reassigned to its own genus, Giraffatitan brancai, by paleontologist George Olshevsky in 1991. Olshevsky proposed that Brachiosaurus brancai, which was originally described by Werner Janensch in 1914, was distinct enough from Brachiosaurus altithorax (the type species of Brachiosaurus) to warrant its own genus. Subsequent studies, particularly by Michael Taylor in 2009, provided further anatomical evidence supporting this distinction.