Complex sentence: One of these has been argued to be "nomen nudum" per Article 13.1 of the ICZN Code, because an appropriate genus description was not given; the matter has been submitted to the ICZN for discussion.
Split into simpler sentences: One of these has been argued to be "nomen nudum" per Article 13.1 of the ICZN Code, because an appropriate genus description was not given. The matter has been submitted to the ICZN for discussion.