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.

Two species are described in the literature: A. ramidus, which lived about 4. 4 million years ago during the early Pliocene, and A. kadabba, dated to approximately 5. 6 million years ago ( late Miocene ).

The number of species recognized worldwide ranges between 30 and 130 with over 200 species-level taxa described.

No modern species should be described as more " primitive " than others, strictly speaking, since each has an equally long evolutionary history — but the brains of modern hagfishes, lampreys, sharks, amphibians, reptiles, and mammals show a gradient of size and complexity that roughly follows the evolutionary sequence.

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.

Authorities classify the species into three or four subspecies: B. m. musculus, the northern blue whale consisting of the North Atlantic and North Pacific populations, B. m. intermedia, the southern blue whale of the Southern Ocean, B. m. brevicauda, the pygmy blue whale found in the Indian Ocean and South Pacific, and the more problematic B. m. indica, the great Indian rorqual, which is also found in the Indian Ocean and, although described earlier, may be the same subspecies as B. m. brevicauda.

The words at the administration of Communion which, in the prayer book of 1549 described the Eucharistic species as ' The body of our Lorde Jesus Christe ...', ' The blood of our Lorde Jesus Christe ...' were replaced with the words ' Take, eat, in remembrance that Christ died for thee ..' etc.

It was one of many species described by Linnaeus in his 18th-century work Systema Naturae ( 1735 ).

The genus Candida and species C. albicans were described by botanist Christine Marie Berkhout in her doctoral thesis at the University of Utrecht in 1923.

About 40 % of all described insect species are beetles ( about 400, 000 species ), and new species are discovered frequently.

Some estimates put the total number of species, described and undescribed, at as high as 100 million, but a figure of 1 million is more widely accepted.

Beetles are by far the largest orders of insects, with 350, 000 – 400, 000 species in four suborders ( Adephaga, Archostemata, Myxophaga, and Polyphaga ), making up about 40 % of all insect species described.

Based on estimates for all 165 families, more than 358, 000 species of beetles have been described and are considered valid.

Most species ( about 62 %) are in six extremely diverse families, each with at least 20, 000 described species: Curculionidae, Staphylinidae, Chrysomelidae, Carabidae, Scarabaeidae, and Cerambycidae.

The smaller families account for 22 % of the total species – 127 families with fewer than 1000 described species and 29 families with 1000 – 6000 described species.

Chimpanzees have been described as highly territorial and are known to kill other chimps, although Margaret Power wrote in her 1991 book The Egalitarians that the field studies from which the aggressive data came, Gombe and Mahale, use artificial feeding systems that increased aggression in the chimpanzee populations studied, so might not reflect innate characteristics of the species as a whole.

Oregano ( or ), scientifically named Origanum vulgare by Carolus Linnaeus, is a common species of Origanum, a genus of the mint family ( Lamiaceae ).

The Raëlian Movement teaches that life on Earth was scientifically created by a species of extraterrestrials, which they call the Elohim.

The International Society of Cryptozoology ( ISC ) was founded in 1982 in Washington, D. C. to serve as a scholarly center for documenting and evaluating evidence of unverified animals ; that is, animal species or forms which have been reported in some manner but which have not been scientifically proven to exist.

The domestic chicken is descended primarily from the Red Junglefowl ( Gallus gallus ) and is scientifically classified as the same species.

Most species that become extinct are never scientifically documented.

The absence of scientifically sound population studies of Nasua or Nasuella in the wild is probably leading to a severe underestimation of the ecological problems and decline in numbers affecting the species.

It was probably Abbe Antonio Jose Cavanilles, Director of the Royal Gardens of Madrid, who should be credited with the attempt to scientifically define the genus, since he not only received the first specimens from Mexico in 1789, but named the first three species that flowered from the cuttings.

Populations of several parrot species were described mainly in the unscientific writings of early travelers, and subsequently scientifically described by several naturalists ( to have their names linked to the species that they were proposing ) mainly in the twentieth century, with no more evidence than the earlier observations and without specimens.

This species was first scientifically described by Linnaeus in his Systema naturae in 1758 under its current scientific name.

The species was first scientifically described by Carl Linnaeus in his 1758 edition of Systema Naturae under the current scientific name.

The first species from this group were scientifically described by Francis Buchanan-Hamilton in 1822, and first mentioned as an angling challenge by the Oriental Sporting Magazine in 1833, soon becoming a favorite quarry of British anglers living in India.

All of the yews are very closely related to each other, and some botanists treat them all as subspecies or varieties of just one widespread species ; under this treatment, the species name used is Taxus baccata, the first yew described scientifically.

The genus Phoneutria ( Greek for " Murderess ") contains eight scientifically described species.

The two new species have been discovered recently and have not yet been described scientifically.

The medical utility of very few species of Passiflora has been scientifically studied.

Flying squirrels, scientifically known as Pteromyini or Petauristini, are a tribe of 44 species of squirrels ( family Sciuridae ).

Today Tiergarten Schönbrunn is considered and regards itself as a scientifically administered zoo which sees its main purpose as a centre for species conservation and general nature conservation as well as in the fulfillment of the education mandate given to it by the legislation.

The bird was first scientifically named as a species of Dodo ( Didus solitarius, based on Leguat's description ) by Johann Friedrich Gmelin in the thirteenth edition of Systema Naturae.

Since then the Cedar species known scientifically as Cedrus libani is often associated with Mount Lebanon.

The scientific name of Murray cod derives from an early Australian fish researcher with the surname McCulloch and the river from which the explorer Major Mitchell first scientifically described the species, the Peel River.

The species was scientifically described by Belgian zoologist Pierre-Joseph van Beneden in 1881.

It was the first magnolia to be scientifically described under modern rules of botanical nomenclature, and is the type species of the genus Magnolia ; as Magnolia is also the type genus of all flowering plants ( magnoliophytes ), this species in a sense typifies all flowering plants.