In the genus Ensatinas, she has been observed to coil around them and press her throat area against them, effectively massaging them with a mucous secretion.

The challenge to the status has focused on the Agnostina partly because juveniles of one genus have been found with legs greatly different from those of adult trilobites, suggesting they are not members of the lamellipedian clade, of which trilobites are a part.

The family also has important ornamentals, mainly from the dominant genus Allium, but also including genera such as Ipheion.

Heinrich Göppert named the common amber-yielding pine of the Baltic forests Pinites succiniter, but as the wood does not seem to differ from that of the existing genus it has been also called Pinus succinifera.

Although the family ( Amaranthaceae ) is distinctive, the genus has few distinguishing characters among the 70 species included.

This complicates taxonomy and Amaranthus has generally been considered among systematists as a " difficult " genus.

The taxonomy of the genus has been controversial.

Although it has previously been assigned to its own genus Alopex, genetic evidence places it in Vulpes ( Mammal Species of the World ) with the majority of the other foxes.

Some South American plants formerly thought of as Daturas are now treated as belonging to the distinct genus Brugmansia ( Brugmansia differs from Datura in that it is woody, making shrubs or small trees, and in that it has pendulous flowers, rather than erect ones ).

The brown hyena has sometimes been placed in a separate genus Parahyaena, or even included in the otherwise fossil genus Pachycrocuta, but recent sources have tended to place it in Hyaena.

The genus Cryptobranchus has historically only been considered to contain one species, Cryptobranchus alleganiensis, with two subspecies, Cryptobranchus alleganiensis alleganiensis and Cryptobranchus alleganiensis bishopi.

Although the word jackal has been historically used to refer to many small-to medium-sized species of the wolf genus of mammals, Canis, today it most properly and commonly refers to three species: the black-backed jackal and the side-striped jackal of sub-Saharan Africa, and the golden jackal of northern Africa and south-central Eurasia.

Heller's names and the designations he gave to various jackal species and subspecies live on in current taxonomy, although the genus has been changed from Thos to Canis.

Although it has morphological similarities with the pygmy killer whale, the false killer whale and the pilot whales, a study of cytochrome b gene sequences by Richard LeDuc indicated that its closest extant relatives are the snubfin dolphins of the genus Orcaella.

Also, a genus of lichen has been named Zamenhofia rosei in his honour.

The taxonomy of the genus Mimosa has had a tortuous history, having gone through periods of splitting and lumping, ultimately accumulating over 3, 000 names, many of which have either been synonymized under other species or transferred to other genera.

Fossil Olea pollen has been found in Macedonia, Greece, and other places around Mediterranean, indicating that this genus is an original element of the Mediterranean flora.

Much rethinking has come to be regarded as only a special case of the property genus.

The Passenger Pigeon is a member of the Columbidae family ( pigeons and doves ) that has been assigned to the genus Ectopistes.

As the senior synonym, Cuvier's name has precedence, so applying modern rules for the combination of the genus name and the specific epithet, the valid species name became Ptéro-Dactyle antiquus.

Unaware of Rafinesque's publication Cuvier himself in 1819 again Latinized the genus, but the specific name he then gave, longirostris, has to give precedence to von Soemmerring's antiquus.

However, it has been difficult to determine exactly of what genus and species P. micronyx might be the juvenile form.

It has sometimes been placed in the genus Diopecephalus because Harry Govier Seeley based this genus partly on the P. longicollum material.

Glycyrrhiza is a genus of about 18 accepted species in the legume family ( Fabaceae ), with a subcosmopolitan distribution in Asia, Australia, Europe, and the Americas.

Adiantum capillus-veneris, the Southern maidenhair fern, black maidenhair fern, and venus hair fern, is a species of ferns in the genus Adiantum with a subcosmopolitan worldwide distribution.

The genus has a subcosmopolitan distribution in Europe, Asia, Africa, Australia and North America.

The genus has a subcosmopolitan distribution, in much of the Northern Hemisphere, south in mountains to South America ( reaching furthest south in Jujuy Province, northwest Argentina ), New Guinea and the Marquesas Islands in the Pacific Ocean, but confined to climates with high humidity for most or all of the year ( or, in cool climates, protected by snow cover in winter ).

Apium ( Celery and Marshwort ) is a genus of about 20 species of flowering plants in the family Apiaceae, with a subcosmopolitan distribution in Europe, Asia, Africa, South America and Australia.

The genus includes herbaceous perennial plants, shrubs and small trees, and has a subcosmopolitan distribution.

For instance, power laws are thought to characterize the behavior of the upper tails for the popularity of websites, the degree distribution of the webgraph, describing the hyperlink structure of the WWW, the net worth of individuals, the number of species per genus, the popularity of given names, Gutenberg – Richter law of earthquake magnitudes, the size of financial returns, and many others.

The genus is present in most layers of the Niobrarra Formation except for the upper two ; in 2003, Kenneth Carpenter surveyed the distribution and dating of fossils in this formation, demonstrating that Pteranodon sternbergi existed there from 88 to 85 million years ago, while P. longiceps existed between 86 and 84. 5 million years ago.

His research foci have included the evolution and fate of the European Neandertals, the role of culture in early hominid evolution, the nature and explanation of allometry, robust australopithecine evolution, the distribution and explanation of sexual dimorphism, hominid origins, the pattern and explanation of Australasian hominid evolution, the contributions and role of genetics in paleoanthropological research, and the taxonomy of the genus Homo.

The genus has a cosmopolitan distribution ; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes on mountains in the tropics.

The family includes about 50 genera and 550 species, with a pantropical distribution ; one genus ( Toona ) extends north into temperate China and south into southeast Australia, and another ( Melia ) nearly as far north.

The Procellariiformes have a cosmopolitan distribution across the world's oceans and seas, although at the levels of family and genus there are some clear patterns.

The Torosaurus genus resembles Triceratops in geological age, distribution, anatomy and physical size and it has been recognised as a close relative.

The genus has a largely Northern Hemisphere distribution, but is essentially cosmopolitan, being found in a variety of wetland habitats.

Ophioglossum ( adder's-tongue ) is a genus of about 25-30 species of Ophioglossales in the family Ophioglossaceae, with a cosmopolitan but primarily tropical and subtropical distribution.

The genus has a cosmopolitan distribution, with the centre of diversity in South America.

Their distribution includes Sub-Saharan Africa and the Indian Subcontinent to the Philippines and Solomon Islands, but no genus is found in both Africa and Asia.

The natural distribution range of the genus Yucca ( 49 species and 24 subspecies ) covers a vast area of North and Central America.

Based on the proportion of Cecropia species producing Mullerian bodies in at least some parts of their distribution, myrmecophytes comprise the vast majority ( 80 %) of species in the genus ; most nonmyrmecophytes occur at higher elevations and on islands, where their ants are missing .” ( Berg, Rosselli and Davidson, 2005: page 214 )

This genus is often described as cosmopolitan, meaning it has worldwide distribution.

Approximately 370 species of the genus Hypericum exist worldwide with a native geographical distribution including temperate and subtropical regions of North America, Europe, Turkey, Russia, India, China and Brazil.

Nettles constitute between 24 and 39 species of flowering plants of the genus Urtica in the family Urticaceae, with a cosmopolitan though mainly temperate distribution.

The genus Columba is the largest within the pigeon family, and has the widest distribution.

The genus has a cosmopolitan distribution, with about 400 species.

* Subfamily: Anatinae, dabbling ducks and moa-nalos ( The dabbling duck group, of worldwide distribution, were previously restricted to just one or two genera, but had been extended to include 8 extant genera and about 55 living species, including several genera formerly known as the " perching ducks "; mtDNA on the other hand confirms that the genus Anas is over-lumped and casts doubt on the diving duck affiliations of several genera below.

As might be expected from a genus with such a wide distribution, the pipits are found in an equally wide range of habitats.

The two crested tits of the genus Lophophanes have a disjunct distribution, with one species occurring in Europe and the other in central Asia.

Larus is a large genus of gulls with worldwide distribution ( although by far the greatest species diversity is in the Northern Hemisphere ).

The genus Cicindela has a cosmopolitan distribution.

The genus has a cosmopolitan distribution, with species in the Americas, Europe, Asia, Africa and Australia.