The actual number of species in each group depends on the taxonomic classification followed.

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.

The suborder Neobatrachia is by far the largest group and includes the remaining families of modern frogs, including most common species.

The largest family in this group is Plethodontidae, the lungless salamanders, which includes sixty percent of all salamander species.

The group includes eight genera and about 85 species distributed in the temperate zones of Europe and Asia, Malaysia, India, Madagascar, Africa and the Pacific, from Australia and New Zealand to South America.

Although the name actually applies to a group of snakes, it is often used to refer only to one species in particular, the common or green anaconda, Eunectes murinus, which is one of the largest snakes in the world.

The group has more than 23, 000 currently accepted species, spread across 1620 genera and 12 subfamilies.

# The eimeriorins are a diverse group that includes one host species of invertebrates, two-host species of invertebrates, one-host species of vertebrates and two-host species of vertebrates.

Lastly, abiotic stress has enabled species to grow, develop, and evolve, furthering natural selection as it picks out the weakest of a group of organisms.

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.

Scientific classification in botany is a method by which botanists group and categorize organisms by biological type, such as genus or species.

It is a member of the group of species known as New World quails ( Odontophoridae ).

Half of the species know are in the great diverse Begonia group of Begoniaceae with 2 genera, and 1500 species.

The turnover in this group is clearly marked at the species level .< ref > Statistical analysis of marine losses at this time suggests that the decrease in diversity was caused more by a sharp increase in extinctions than by a decrease in speciation .< ref > The K – T boundary record of dinoflagellates is not as well-understood, mainly because only microbial cysts provide a fossil record, and not all dinoflagellate species have cyst-forming stages, thereby likely causing diversity to be underestimated.

They survived through the K – T boundary and are currently the most successful and diverse group of living reptiles with more than 6, 000 extant species.

The only bird group known for certain to have survived the K – T boundary is the Neornithines ( though one Paleogene species, Qinornis paleocenica, may represent a surviving non-neornithine bird ).

However, one group of researchers have found that carob seeds in fact have typical variability compared to the seeds of other species.

Evidence from fossils and DNA sequencing show both species of chimpanzees are the sister group to the modern human lineage.

Along with many other members of a group of unusual species collectively called the " Australian megafauna ", it existed from approximately 1. 6 million years ago until extinction some 46, 000 years ago ( through most of the Pleistocene epoch ).

In his book Systematics and the Origin of Species ( 1942 ) he wrote that a species is not just a group of morphologically similar individuals, but a group that can breed only among themselves, excluding all others.

From then on, in keeping with the traditions they had followed since childhood, the whole group settled down to relish their food.

Those three other great activities of the Persians, the bath, the teahouse, and the zur khaneh ( the latter a kind of club in which a leader and a group of men in an octagonal pit move through a rite of calisthenics, dance, chanted poetry, and music ), do not take place in buildings to which entrance tickets are sold, but some of them occupy splendid examples of Persian domestic architecture: long, domed, chalk-white rooms with daises of turquoise tile, their end walls cut through to the orchards and the sky by open arches.

A successful businessman recently prefaced his address to a luncheon group with the statement that all economists should be sent to the hospitals for the mentally deranged where they and their theories might rot together.

`` We were requested by the Secretary General, as I understand it, to discuss with you such matters as appear to us to be relevant, and we are not of course either a formal group or a committee in the sense of being guided by any rules or regulations of the Secretariat.

Peter Marshall noted that Bang-Jensen had later referred to his two interviews with the Gross group as `` unfortunate experiences '', and after his second meeting on the sixteenth the Dane refused to attend further hearings without legal counsel.

Swift, in the Dublin edition of A Preface to the Bishop of Sarum's Introduction, indicated his feelings by including Molesworth, along with Toland, Tindal, and Collins, in the group of those who, like Burnet, are engaged in attacking all Convocations of the clergy.

He had talked one other member of the group to stay with him, but that friend had tired of not eating regularly and returned to Savannah.

When the victory cheer went up this officer found himself still mounted, with his horse pressed broadside against Cleburne's log parapet in a tangled group of infantrymen.

Very soon after his arrival in Little Rock, Pike had joined one of the most influential organizations in town, the Little Rock Debating Society, and it was with this group that he made his debut as an orator, being invited to deliver the annual Fourth of July address the club sponsored every year.

Although Patchen has given previous evidence of an interest in jazz, the musical group that he works with, the Chamber Jazz Sextet, is often ignored by jazz critics.

Coupling its own budget of $83,750 with a $30,000 state grant authorized by Gov. Vandiver, the group expects to sign a contract in March with Georgia Tech..

Fortunately, there is a nursery school which he has been able to attend, with a group of normal children.

One cannot but wonder whether these doubts about the success of Khrushchev's agricultural policy have not at least something to do with one of the big surprises provided by this Congress -- the obsessive harping on the crimes and misdeeds of the `` anti-party group '' -- Molotov, Malenkov, Kaganovich and others -- including the eighty-year-old Marshal Voroshilov.

With shout and slow dance, with tears and song, with scream and contortion, the corner group was beset by hysteria and shivering, wailing, shouting, possession of something that seemed like an alien and outside force.

He was reading from the Talmud with a group of men from his congregation.

I, for one, rather regret that Schnabel didn't collaborate with the Budapest Quartet, whose rugged, athletic playing was a good deal closer to this pianist's interpretative outlook than the style of the Belgian group.

Helmut Roloff, playing with a group of musicians from the Bayreuth Ensemble, gives a sturdy reading, in much the same vein as that of the last-mentioned pianists.

Independent art schools granting degrees must, naturally, follow this with academic accreditation by the appropriate regional group.

In them, there is usually a group of Anglo-Americans with tragicomic problems, worthy of being explored either in the novel or in the play or in comedy and satire ''.

However, the possible absence of a center of symmetry not only moves the hydrogen atom off Af, but also allows the oxygen atoms to become nonequivalent, with Af at Af and Af at Af ( space group Af ), where Af represents the oxygens on one side of the Af layers and Af those on the other side.

Then, too, the utmost clinical flexibility is necessary in judiciously combining carefully timed family-oriented home visits, single and group office interviews, and appropriate telephone follow-up calls, if the worker is to be genuinely accessible and if the predicted unhealthy outcome is to be actually averted in accordance with the principles of preventive intervention.

Of startling significance, too, is the assertion that it was possible to carry out this program with only a 6 percent attrition rate as compared with a rate of 59 percent reported for a comparable group of families who were receiving help in traditionally operated child guidance services.