These two defunct phyla were the Myxomycota ( i. e., plasmodial slime molds, now classified in the taxon Myxogastria ), and Acrasiomycota ( i. e. cellular slime molds, now divided into the taxa Acrasida and Dictyosteliida ).

The word amphibian became restricted in the taxonomical sense to what we now use around 1600, with the taxon " Amphibia " first published in scientific classification circa 1819.

As a result of these recent findings in molecular biology, the label mesozoan is now often applied informally, rather than as a formal taxon.

Formerly considered part of Tracheata, velvet worms are now considered close relatives of the Arthropoda and Tardigrada, with which they form the taxon Panarthropoda.

Together with Echiura and Sipuncula, they were once placed in the taxon Gephyrea, but it is now clear that they belong to Ecdysozoa, which mostly include microscopic animals, with the exception of the relatively large arthropods, velvet worms, and the priapulids.

Domestic and pariah dogs in southern Asia share so many characteristics with Australian dingoes that experts now consider them to be, if not " dingoes " in the Australian sense of the word ( which implies an independent, wild animal, integrated into the ecosystem ), members of the taxon Canis lupus dingo, a particular subspecies of Canis lupus.

A couple of isolated teeth which had been previously identified as perhaps belonging to Ectypodus, have been now been placed within this taxon.

The following taxon were once included in Ornithorhynchus, but has now been concluded to be from the echidna family:

" Siaphos " tridigitus, initially placed here, is now reassigned to the " wastebin taxon " Sphenomorphus pending a review of that assemblage.

Under the present International Code of Zoological Nomenclature, for names newly published now, after 1999, it is a requirement to " expressly indicate those specimens ... upon which the new taxon s based [...].

The genus was a wastebasket taxon, and many of its members have been reclassified in smaller genera, most notably the Everlastings, now in the genus Xerochrysum.

A dwarf form exists in the Mediterranean Sea, which was described as Argonauta argo mediterranea, although this taxon is now regarded as invalid.

The populations on La Palma and El Hierro, previously thought to belong to this taxon, are now recognized as, at least, a distinct subspecies, the Western Canary Islands Goldcrest R. ( r .) ellenthalerae ( Päckert et al., 2006 ), which evolved from an independent colonisation of the islands.

The taxon Caenogastropoda was first established by Leslie Reginald Cox in 1960 as a superorder but now sometimes it is retained as a clade.

If confirmed, this is the first taxon of hornbill to go extinct in recorded history ; many other taxa in the family are now at risk.

In the past the type was given its own species name, Bos aegyptiacus, but it is now regarded as part of the same scientific taxon as other domestic cattle: either Bos taurus or Bos primigenius subspecies taurus.

Following the construction of dams and hydropower reservoirs, the migration and natural reproduction has been impeded, and the taxon is now considered as extinct in the wild by the IUCN.

Once this family was a part of the large catch-all taxon Clubionidae, now a shadow of its former self.

Most dinosaurs formerly referred to as being in the dubious taxon " Podokesauridae " are now classified as coelophysoids.

Previously, the taxon maculicollis was considered a subspecies of the Red-winged Tinamou, but following SACC it is now considered a species in its own right ; the Huayco Tinamou.

* Pons, a gossamer-winged butterfly taxon now considered a junior synonym of Penaincisalia

Normally, this would have made Ornithomimus a junior synonym of Coelosaurus, but Baird and Horner discovered that the name " Coelosaurus " was preoccupied by a dubious taxon based on a single vertebra, named Coelosaurus by an anonymous author now known to be Richard Owen in 1854.

Along-legged taxon is known from the Carboniferous Mazon Creek.

Andrew Farke, in his 2011 redescription of the only known skull, concluded that it was an aged individual of its own valid taxon, Nedoceratops hatcheri.

In theory, when the biological source ( taxon ) of an acritarch does become known, that particular microfossil is removed from the acritarchs and classified with its proper group.

Since the taxon is based almost exclusively on skulls, the body is very poorly known.

* Klepton, a phenomenon known in zoology where mating with another taxon is required to complete reproduction

He categorized echinoderms, arachnids, crustaceans and annelids, which he separated from the old taxon for worms known as Vermes.

It might have been an undescribed taxon, or simply a vagrant of a known species.

It has further been suggested that the taxon mayri, known only from a single old specimen, may represent a valid species, but as it is virtually unknown, most authorities have retained it as a subspecies of D. dorianus.

It appears to be unrelated to other known members of this taxon.

In this case of one taxon, remains are reasonably well known.

Some Common Chiffchaffs in the Middle East are browner and have a more disyllabic swee-hu call than P. c. abietinus, and may belong to a poorly known taxon " brevirostris "; further research is needed to clarify the affinities of this form.

From the Permian numerous stem group representatives of mayflies are known, which are often lumped into a separate taxon Permoplectoptera ( e. g. including Protereismatidae and Misthodotidae ).

undescribed remains found on Menorca may belong to an already-named or a new taxon ; they are not from the Balearic Shearwater ( Alcover 2001 ) which is possibly closer to P. holeae than to any other known species, living or extinct.

A common name of a taxon or organism ( also known as a vernacular name, English name, colloquial name, trivial name, trivial epithet, country name, popular name, or farmer's name ) is a name in general use within a community ; it is often contrasted with the scientific name for the same organism.

Some known fossils include the Pliocene genus Palaeomyrmidon, a close relative to the silky anteater, Protamandua, the sister taxon to the clade that includes the giant anteater and the tamanduas from the Miocene, and Neotamandua, a sister taxon to Myrmecophaga.

The genus Sphenomorphus – vernacularly known as the common skinks – currently serves as a " wastebin taxon " for a large number of skinks.

A holotype is a single physical example ( or illustration ) of an organism, known to have been used when the species ( or lower-ranked taxon ) was formally described.

The Western Olivaceous Warbler, also known as Isabelline Warbler, ( Hippolais opaca ) is a " warbler ", formerly placed in the Old World warblers when these were a paraphyletic wastebin taxon.

It may have been an undescribed taxon, but more likely it was not ; it could simply have been a vagrant of a known species.

The presumed subspecies for the Madeira birds, bella is today usually included in this taxon, as are the birds of the Canary Islands, where the species is quite common except on El Hierro and known as zarzalero y ratonero ( Álamo Tavio 1975 ).

The early and middle Eocene genus Eogliravus represents the earliest and most primitive glirid taxon ; the oldest species, Eogliravus wildi, is known from isolated teeth from the early Eocene of France and a complete specimen of the early middle Eocene of the Messel pit in Germany.

The defunct genus Tetronychoteuthis was previously incorporated into Pholidoteuthidae based upon a singular taxon known as Tetronychoteuthis massyae.

Generally speaking in biology taxonomy is required to reflect phylogeny, in other words the classification of a group must reflect its evolutionary descent, as far as that is known, so the taxon Prosobranchia is no longer considered suitable to be used.