Its type is Merychippus insignis.

Merychippus was named by Leidy ( 1856 ).

Merychippus was the first equine to have the distinctive head of today's horses.

Its teeth were like those of Parahippus ; the extra crest that was variable in Miohippus was permanent in Merychippus, and the other teeth were beginning to form a series of tall crests with higher crowns.

By the end of the Miocene era, Merychippus was one of the first speedy grazers.

Its name means " ruminant horse ", but current evidence does not support Merychippus ruminating.

Merychippus lived in herds.

In some Merychippus species, the side toes were larger, whereas in others, they had become smaller and only touched the ground when running.

* Photo of a Merychippus tooth.

According to the fossil record, Lissamphibia, which includes all modern amphibians and is the only surviving lineage, may have branched off from the extinct groups Temnospondyli and Lepospondyli at some period between the Late Carboniferous and the Early Triassic.

The phylogeny of Paleozoic amphibians is uncertain, and Lissamphibia may possibly fall within extinct groups like the Temnospondyli ( traditionally placed in the subclass Labyrinthodontia ), and the Lepospondyli, and in some analysis even the amniotes.

The Lissamphibia, superorder Salientia, are traditionally divided into three orders, but an extinct salamander-like family, the Albanerpetontidae, is now considered part of the Lissamphibia alongside the superorder Salientia.

The Anatolian plateau is interspersed with extinct volcanoes, the tallest of which is Mt.

Most notable for this use is the extinct giant fennel, silphium.

The plateau is masked by intermediate mountain ranges and extinct volcanoes.

It is predicted that abalones will become extinct in the wild within 200 years at current rates of carbon dioxide production.

The extinct medullosans produced a third type of resin, which is often found as amber within their veins.

Resin from the extinct species Hymenaea protera is the source of Dominican amber and probably of most amber found in the tropics.

This means that species are more likely to become population threatened, endangered, and even extinct, when and where abiotic stress is especially harsh.

The aurochs ( or ; also urus, ( Bos primigenius ), the ancestor of domestic cattle, is an extinct type of large wild cattle that inhabited Europe, Asia and North Africa ; they survived in Europe until the last recorded aurochs, a female, died in the Jaktorów Forest, Poland in 1627.

Amblypoda is a taxonomic hypothesis uniting a group of extinct, herbivorous mammals.

* In the very south of the city, on the border with Wachtberg and Rhineland-Palatinate, is an extinct volcano the Rodderberg

Bernard G. Campbellin wrote: " That Gigantopithecus is in fact extinct has been questioned by those who believe it survives as the Yeti of the Himalayas and the Sasquatch of the north-west American coast.

Some extinct members of the crocodilian line, a sister group to the dinosaurs and birds, also evolved bipedal forms-a crocodile relative from the triassic, Effigia okeeffeae, is believed to be bipedal.

The group is usually divided into two sub-groups: Western Baltic, containing only extinct languages, and Eastern Baltic, containing both extinct and the two living languages in the group: Lithuanian ( including both Standard Lithuanian and Samogitian ) and Latvian ( including both literary Latvian and Latgalian ).

It is almost extinct, as it was replaced with the C language.

Another suggestion is that the bunyip may be a cultural memory of extinct Australian marsupials such as the Diprotodon or Palorchestes.

1 subspecies is extinct:

The giant skink ( Macroscincus coctei ) is now thought to be extinct.

For example, it is thought that ammonites were the principal food of mosasaurs, a group of giant marine reptiles that became extinct at the boundary .< ref name =" Kauffman ">

Non-avian dinosaur fossils are found only below the K – T boundary, indicating that they became extinct during the boundary event .< ref > A very small number of dinosaur fossils have been found above the K – T boundary, but they have been explained as reworked fossils, that is, fossils that have been eroded from their original locations then preserved in later sedimentary layers.

For example, it is thought that ammonites were the principal food of mosasaurs, a group of giant marine reptiles that became extinct at the boundary .< ref name =" Kauffman ">

`` I have just come from viewing a man who had made the fortune of his country, but now is working all night in order to support his family '', he reflected.

For the family is the simplest example of just such a unit, composed of people, which gives us both some immunity from, and a way of dealing with, other people.

We consider a rural community as an assemblage of inhabited dwellings whose configuration is determined by the location and size of the arable land sites necessary for family subsistence.

Engaged as it is in a battle for world trade as a condition of national survival, this country can have little patience with labor's family feuds.

There is little doubt if they had a secret ballot, they would vote for food for their family, in place of ideological purity out on the farm.

The family is largely broken up ; ;

For it is the family that, in China, has always provided social security for the indigent, the sick, the down-and-out members of the clan.

Part of the family should be sleeping while the rest is awake.

The Peace Corps should not pay the expenses of a wife or family, unless the wife is also accepted for full-time Peace Corps work on the same project.

Arriving at the waterside, the boat is launched, the family taken aboard and, that easily, another day afloat is begun.

This one was set up here in 390 A.D. on a pedestal, the faces of which are carved with statues of the emperor and his family watching games in the Hippodrome, done so realistically that the obelisk itself is included in them.

Hotei is 23 feet long with an 8-1/2-foot beam and every inch a family boat.

First and foremost: No one -- no, not anyone -- in the family is allowed to issue blanket invitations to his or her own circle.

Follow pool-care instructions to the letter, and be sure that one person ( in the family or not ) is regularly responsible for each aspect of the job, with no chance for claiming, `` It wasn't my turn ''.

They come prepared for family fun because Americans in ever-growing numbers are learning that here is the way to a fine economical vacation that becomes a family experience of lasting importance.

Camping is family fun, and it is helping more Americans see more of the country than they ever saw before.

When a family buys a home the title is subject to a perpetual easement to Tri-State.

In one cartoon a family is shown outside a theater with the head of the family addressing the doorman: `` Excuse me, but when we came out we found that we had left my daughter's handbag and my wife's behind ''.

It is presumed to occur in other members of the Brassica family.

A family of five plans to go together either to the beach or to the mountains, and a coin is tossed to decide.

When this experiment is viewed as composed of five binomial trials, one for each member of the family, the outcomes of the trials are obviously not independent.