he was working with species of Java, so perhaps some tropical snakes are unusual in this respect.

Of these, 1, 356 ( 33. 6 %) were considered to be threatened and this figure is likely to be an underestimate because it excludes 1, 427 species for which there was insufficient data to assess their status.

Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization.

In 2008, it was discovered that the inactivation of only two genes in one species of annual plant leads to the conversion into a perennial plant.

Although most extant species of Asteraceae are herbaceous, the examination of the basal members in the family suggests that the common ancestor of the family was an arborescent plant, a tree or shrub, perhaps adapted to dry conditions, radiating from South America.

A number of species have come to be considered invasive, including, most notably in North America, dandelion, which was originally introduced by European settlers who used the young leaves as a salad green.

This fossil was originally described as a species of Australopithecus, but White and his colleagues later published a note in the same journal renaming the fossil under a new genus, Ardipithecus.

The type species, A. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which the genus is named.

It is improbable, however, that the production of amber was limited to a single species ; and indeed a large number of conifers belonging to different genera are represented in the amber-flora.

He was considered the 19th century's leading expert on the geographical distribution of animal species and is sometimes called the " father of biogeography ".

The species was introduced into cultivation at the beginning of the eighteenth century.

No one knows the exact species it was crossed with to produce color variations of white, cream, peach, magenta and nearly red hues.

The program was successful in terms of increasing the population of blue foxes, but their predation of Aleutian Canadian geese conflicted with the goal of preserving that species.

By 1987 a comprehensive survey of the phylum was completed: in all, 4516 species and 339 genera had been named.

When a group of different plant species was prompted by a variety of different stress signals, such as drought or cold, each plant responded uniquely.

Animal species diversity was also significantly impacted: in one study, a Harvard biologist found 24 species of birds and 5 species of mammals in a sprayed forest, while in two adjacent sections of unsprayed forest there were 145 and 170 species of birds and 30 and 55 species of mammals.

According to Ferdinand Bohlmann, the first naturally occurring acetylenic compound, dehydromatricaria ester, was isolated from an Artemisia species in 1826.

The substance so defined was a species.

One of these was the property, an essential universal true of the species, but not in the definition ( in modern terms, some examples would be grammatical language, a property of man, or a spectral pattern characteristic of an element, both of which are defined in other ways ).

A species of Paranthropus, such as Paranthropus robustus, with its crested skull and bipedal gait, was suggested by primatologist John Napier and anthropologist Gordon Strasenburg as a possible candidate for Bigfoot's identity, despite the fact that fossils of Paranthropus are found only in Africa.

The study found that there was ' no verifiable evidence ' of exotic felines loose in Britain, and that the mauled farm animals could have been attacked by common indigenous species.

All modern amphibians are included in the subclass Lissamphibia, superorder Salientia, which is usually considered a clade, a group of species that have evolved from a common ancestor.

* Atlas Cedar, a cedar tree sometimes included in Cedrus libani, sometimes treated as species C. atlantica

* Atlas Flycatcher ( Ficedula speculigera ), a songbird species sometimes included in the Eurasian Pied Flycatcher

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

# Piroplasms where all the species included are two-host parasites infecting ticks and vertebrates.

Other common names for the blue whale have included Sibbald's rorqual ( after Sibbald, who first described the species ), the great blue whale and the great northern rorqual.

Each protected species or population is included in one of three lists, called Appendices ( explained below ).

; Lists of species included in Appendices I, II and III ( i. e. species protected by CITES )

Often the species of mafic minerals is included in the name, for instance, hornblende-bearing granite, pyroxene tonalite or augite megacrystic monzonite, because the term " granite " already assumes content with feldspar and quartz.

It was the only modern species in the genus Pinguinus, a group of birds that formerly included one other species of flightless giant auk from the Atlantic Ocean region.

When the colonies included other species of alcid, the Great Auks were dominant due to their size.

Their analysis included both species.

Their analysis included all four species, with M. auratus and M. raddei forming one subclade and M. brandti and M. newtoni another.

In addition, some species included are only remotely related to one another, with some more related to vertebrates than other invertebrates.

Ancient DNA studies have shown that in prehuman times the distribution of this species included the east coast of the South Island.

More than 150 species of grasses and trees are included in 1500 entries of Man ' yōshū.

The orangutans are also the only surviving species of the subfamily Ponginae, which also included several other species like Gigantopithecus, the largest known primate.

Opinions differ whether the species P. aethiopicus, P. boisei and P. robustus should be included within the genus Australopithecus.

Up until the last half-decade, the majority of the scientific community included all the species of both Australopithecus and Paranthropus in a single genus.

All methods depend upon an implicit or explicit mathematical model describing the evolution of characters observed in the species included ; all can be, and are, used for molecular data, wherein the characters are aligned nucleotide or amino acid sequences, and all but maximum likelihood ( see below ) can be, and are, used for morphological data.

A total of 415 animal species have been included in the Red Data Book of the Russian Federation as of 1997 and are now protected.

The range of evolutionary theories during " the eclipse of Darwinism " included forms of " saltationism " in which new species were thought to arise through " jumps " rather than gradual adaptation, forms of orthogenesis claiming that species had an inherent tendency to change in a particular direction, and forms of neo-Lamarckism in which inheritance of acquired characteristics led to progress.