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122 Terms used in Bionomenclature<br />
monstrosity: a specimen showing an abnormal (non-hereditary) structural<br />
condition; names based on type specimens that were monstrosities<br />
were formerly to be rejected in (bot.), but that provision of the Code<br />
has now been deleted.<br />
more than . . . . less than, [< . . . . . >]: (phyl.) an ideograph placed around<br />
the citation of the name of an author of the original definition of a<br />
homonym that has been conserved for the purpose of emending a<br />
definition.<br />
morph: shape; used of a specimen or stage in a life-cycle with a particular<br />
or unusual, and generally morphological attribute.<br />
morpha, [pl. morphae]: (unoff.) used for specimens or groups of<br />
specimens of an uncertain infraspecific category; cfr taxon.<br />
morphology: the study of a structure; morphological terms are those that<br />
denote structural parts of an organism (e.g. radix = root, caulis =<br />
stem).<br />
morphon: (zool., unoff.) a definitely formed individual.<br />
morphonym: (zool., unoff.) the name of a species; the specific name.<br />
morphotaxon: (palaeo. bot.) a fossil taxon which, for nomenclatural<br />
purposes, comprises only one part, life-history stage, or<br />
preservational state represented by the corresponding nomenclatural<br />
type; any fossil taxon that is described as including more than one<br />
part, life-history stage, or preservational state is not a morphotaxon.<br />
morphotype, [morphotypus]: (1) a group or population of<br />
morphologically differentiated individuals within a species, often<br />
used of ones of no, or of undetermined, taxonomic significance. (2)<br />
(prok.) a variant of a species distinguished by the presence of some<br />
special or unusual morphological feature, for which the term<br />
“morphovar.” is recommended by that Code. (3) (palaeo. zool.,<br />
obsol.) a specimen that has been figured in print not adding to what<br />
was previously known about the morphology of the taxon to which<br />
it is referred. (4) (zool., unoff.) the type specimen of a different<br />
morph of a dimorphic or polymorphic species. (5) (obsol., not<br />
nomenclatural) the generalized or idealized pattern shared by all<br />
members of a taxon; an archetype (q.v.).