Complex sentence: In the resulting rearrangement to create monophyletic genera these four species were moved to the resurrected genus "Sipia" which had been introduced by the Austrian ornithologist Carl Eduard Hellmayr in 1924.
Split into simpler sentences: In the resulting rearrangement to create monophyletic genera these four species were moved to the resurrected genus "Sipia". The genus had been erected by the Austrian ornithologist Carl Eduard Hellmayr in 1924.