The Commission has reinstated the availability of specific names proposed for Devonian ammonoids (Mollusca, Cephalopoda) by Sobolew (1914a, 1914b) widely used by palaeontologists and stratigraphers for almost a century even though these names were established in a work placed on the Official Index of Rejected and Invalid Works in Zoological Nomenclature by Direction 32 (following Opinion 132, in which the genus-group names (Gattungsbezeichnungen) established by Sobolew (1914a, 1914b) were considered to be formulas and not available generic names). The entries for Sobolew (1914a, 1914b) in the Official Index of Works in Zoology have been emended to record that the 88 species-group names established in these works are available from the original publications.