Complex sentence: His reputation as an over-zealous splitter seems to have been justified: as one example, a 1966 analysis of his observations on "Sonninia" (an ammonite genus in family Sonniniidae) reduced 70 species down to two.
Split into simpler sentences: His reputation as an over-zealous splitter seems to have been justified. As one example, a 1966 analysis of his observations on "Sonninia" (an ammonite genus in family Sonniniidae) reduced 70 species down to two.