Complex sentence: This was an invalid designation, however, and the name was first formally made available by Günther Enderlein that same year, so Buttel-Reepen is not the author of the name (following the ICZN).
Split into simpler sentences: This was an invalid designation, however, and the name was first formally made available by Günther Enderlein that same year. Therefore, Buttel-Reepen is not the author of the name (following the ICZN).