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In biologia, un typo es un specimen particular (o groppo de specimens) usate pro definir formalmente le nomine scientific de un organismo. Le typo es le individuo o fossile permittente le definition del characteristicas proprie a un taxon. N.B. un typo remane ligate al nomine original si le nomine del taxon evolua.
Se distingue:
Un singule specimen identifiate in le publication original de un specie nove e conservate in un major museo o institution.
Additional specimenes complementari al holotypo.
Un paratypo del sexo contrari al holotypo (si necessario).
Un specimen ulterior quando no ha holotypo.
Quando il ha plure specimenes typo (deconsiliate).
Le lectotypo es le unic specimen selectionate pro reimplaciar le altere syntypos.
Additional specimenes complementari al lectotypo.
Un specimen de laborator pro hymenopteros con castas polymorphic.
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