Complex sentence: Researchers at the University of Leicester found further evidence that "Tullimonstrum" was a vertebrate: two types of melanosomes in the creature's eyes, a feature found only in vertebrates.
Split into simpler sentences: Researchers at the University of Leicester have found further evidence that Tully monster was a vertebrate. They found evidence of two types of melanosomes in the creature's eyes-a feature found only in vertebrates.