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Extant is the opposite of the word extinct. It may refer to: Extant hereditary titles; Extant literature, surviving literature, such as Beowulf, the oldest extant manuscript written in English; Extant taxon, a taxon which is not extinct, such as an extant species; Extant Theatre Company, a disability arts organisation; Extant, an American ...
A living fossil is a deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade. Living fossils commonly are of species-poor lineages, but they need not be.
The following table shows summary estimates for each tetrapod class from the IUCN Red List of Threatened Species, 2014.3, for the number of extant species that have been described in the literature, as well as the number of threatened species.
The Hominidae (/ h ɒ ˈ m ɪ n ɪ d iː /), whose members are known as the great apes [note 1] or hominids (/ ˈ h ɒ m ɪ n ɪ d z /), are a taxonomic family of primates that includes eight extant species in four genera: Pongo (the Bornean, Sumatran and Tapanuli orangutan); Gorilla (the eastern and western gorilla); Pan (the chimpanzee and the bonobo); and Homo, of which only modern humans ...
Among extant insect taxa they are some of the most evolutionarily primitive; they appeared in the Middle Devonian period at about the same time as the arachnids. Specimens that closely resemble extant species have been found as both body and trace fossils (the latter including body imprints and trackways) in strata from the remainder of the ...
The linguist and etymologist Anatoly Liberman describes the terms as synonyms. [7] In the Antwerp Glossary bæddel is used to gloss two Latin phrases: Anareporesis, i. homo utriusque generis ('andreporesis, i.e. man of both sexes') and Hermafroditus (' hermaphrodite '). These are the two extant glosses for the word.
Neontology is a part of biology that, in contrast to paleontology, deals with living (or, more generally, recent) organisms.It is the study of extant taxa (singular: extant taxon): taxa (such as species, genera and families) with members still alive, as opposed to (all) being extinct.
A synonym of catkin. amphitropous (of an ovule) Bent so that both ends are near each other. Contrast anatropous, campylotropous, and orthotropous. amplexicaul With the base dilated and clasping the stem, usually of leaves. amylum star a vegetative propagative body filled with starch (amylum) and located around the lower nodes of certain ...