Complex sentence: The Saxaul Sparrow usually is classified in the genus "Passer" with the House Sparrow and about twenty other species, though a genus "Ammopasser" was created for this species by Nikolai Zarudny in 1890.
Split into simpler sentences: The Saxaul Sparrow usually is classified in the genus "Passer", which contains at least 20 other species, including the House Sparrow. A genus "Ammopasser" was created for this species by Nikolai Zarudny in 1890.