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At the species level, subjective synonyms are common because of an unexpectedly large range of variation in a species, or simple ignorance about an earlier description, may lead a biologist to describe a newly discovered specimen as a new species. A common reason for objective synonyms at this level is the creation of a replacement name.
When two species names are discovered to apply to the same species, the older species name is given priority and usually retained, and the newer name considered as a junior synonym, a process called synonymy. Dividing a taxon into multiple, often new, taxa is called splitting. Taxonomists are often referred to as "lumpers" or "splitters" by ...
species aggregate or aggregate species: a grouping of closely related species that are treated like a single species for practical purposes; alliance: a group of species or genera that have at some time been considered provisionally related; conspecific: of the same species; e. g. of two taxa previously thought to be different species
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
a short history of speciesism", defining it as "a prejudice or attitude of bias in favour of the interests of members of one's own species and against those of members of other species": Racists violate the principle of equality by giving greater weight to the interests of members of their own race when there is a clash between their interests ...
Nodding, falling headlong or face down; inclined, stooping, or bowing forward. Applied to many species with a nodding, stooping habit, such as many Narcissus and Dierama species. Many plant species bear the specific epithet "cernua". cespitose An alternative spelling of caespitose, meaning tufted or turf-like, e.g. the growth form of some ...
The following is a list of tautonyms: zoological names of species consisting of two identical words (the generic name and the specific name have the same spelling). Such names are allowed in zoology, but not in botany, where the two parts of the name of a species must differ (though differences as small as one letter are permitted, as in cumin, Cuminum cyminum).
Used for species that resemble previously named species. Examples: Paranthodon ("nearly flower tooth"); Pararhabdodon ("near fluted tooth"); Parasaurolophus ("near lizard crest")-pelta: Pronunciation: /pɛltə:/ Origin: Ancient Greek: πέλτη (péltē). Meaning: shield. Frequently used for ankylosaurs.