The International Commission on Zoological Nomenclature has declined to use its specific powers to rule that ‘Formenkreis’ (plural ‘Formenkreise’) is not a genus-group taxonomic rank with potential availability.
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31 December 2018
Opinion 2420 (Case 3678) – Proposal to affirm that ‘Formenkreis’ is not a genus-group taxonomic rank with potential availability: not approved
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Formenkreis
land snails
nomenclature
superspecies
taxonomy