Complex sentence: The genus name is sometimes spelt "Necrophorus" in older texts: this is an emendation by Thunberg (1789) of Fabricius's original name, and is not valid.
Split into simpler sentences: The genus name is sometimes spelt "Necrophorus" in older texts. This is an emendation by Thunberg (1789) of Fabricius's original name, and is not valid.