Complex sentence: In 1979, palaeontologist Elisabeth Vrba supported "Sigmoceros" as a separate genus for this hartebeest, based on the species' closer affinity to "Connochaetes"; she dissolved the new genus later in 1997 after reconsideration.
Split into simpler sentences: In 1979, palaeontologist Elisabeth Vrba supported "Sigmoceros" as a separate genus for this hartebeest, based on its close affinity to "Connochaetes". However, she dissolved the new genus later in 1997 after reconsideration.