Complex sentence: Unlike other sperm whales with functional teeth in the upper jaw, no tooth roots were entirely present in the premaxilla portion of the snout, and, consequently, its tooth count was lower than those sperm whales.
Split into simpler sentences: Unlike other sperm whales with functional teeth in the upper jaw, no tooth roots were entirely present in the premaxilla portion of the snout. Consequently, its tooth count was lower than those sperm whales.