| Mergellus | |
|---|---|
 | |
| Smew (Mergellus albellus) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Subfamily: | Anatinae |
| Genus: | Mergellus Selby, 1840 |
| Species | |
Mergellus is a genus of duck. The smew (Mergellus albellus) is the only living species, but an extinct species known as Mergellus mochanovi has also been described from Late Pleistocene deposits in the Yakutia region of Russia. [1]
Bison are large bovines in the genus Bison within the tribe Bovini. Two extant and numerous extinct species are recognised.
Sakha, officially the Republic of Sakha (Yakutia), is the largest republic of Russia, located in the Russian Far East, along the Arctic Ocean, with a population of roughly 1 million. Sakha comprises half of the area of its governing Far Eastern Federal District, and is the world's largest country subdivision, covering over 3,083,523 square kilometers (1,190,555 sq mi). Yakutsk, which is the world's coldest major city, is its capital and largest city. The republic has a reputation for an extreme and severe climate, with the lowest temperatures in the Northern Hemisphere being recorded in Verkhoyansk and Oymyakon, and regular winter averages commonly dipping below −35 °C (−31 °F) in Yakutsk. The hypercontinental tendencies also result in warm summers for much of the republic.
A pika is a small, mountain-dwelling mammal found in Asia and North America. With short limbs, very round body, an even coat of fur, and no external tail, they resemble their close relative, the rabbit, but with short, rounded ears. The large-eared pika of the Himalayas and nearby mountains is found at heights of more than 6,000 m (20,000 ft), among the highest of any mammal.
The sea ducks (Mergini) are a tribe of the duck subfamily of birds, the Anatinae. The taxonomy of this group is incomplete. Some authorities separate the group as a subfamily, while others remove some genera. Most species within the group spend their winters near coastal waters. Many species have developed specialized salt glands to allow them to tolerate salt water, but these are poorly developed in juveniles. Some of the species prefer riverine habitats. All but two of the 22 species in this group live in far northern latitudes.
The smew is a species of duck and is the only living member of the genus Mergellus. Mergellus is a diminutive of Mergus and albellus is from Latin albus "white". This genus is closely related to Mergus and is sometimes included in it, though it might be closer to the goldeneyes (Bucephala). The smew has hybridized with the common goldeneye.
Mergus is the genus of the typical mergansersmur-GAN-sərz, fish-eating ducks in the subfamily Anatinae. The genus name is a Latin word used by Pliny the Elder and other Roman authors to refer to an unspecified waterbird.
The woolly rhinoceros is an extinct species of rhinoceros that was native to Northern Eurasia during the Pleistocene epoch. The woolly rhinoceros was a member of the Pleistocene megafauna. The woolly rhinoceros was covered with long, thick hair that allowed it to survive in the extremely cold, harsh mammoth steppe. It had a massive hump reaching from its shoulder and fed mainly on herbaceous plants that grew in the steppe. Mummified carcasses preserved in permafrost and many bone remains of woolly rhinoceroses have been found. Images of woolly rhinoceroses are found among cave paintings in Europe and Asia. The species became extinct at the end of the Last Glacial Period, with its decline probably predominantly driven by unfavourable environmental change caused by a warming climate.
The steppe bison or steppe wisent is an extinct species of bison that was once found on the mammoth steppe where its range included British Isles, Europe, Central Asia, Northern to Northeastern Asia including the Japanese archipelago, Beringia, and central North America, from northwest Canada to Mexico during the Quaternary. This wide distribution is sometimes called the Pleistocene bison belt, compared to the Great bison belt. Three chronological subspecies, Bison priscus priscus, Bison priscus mediator, and Bison priscus gigas, have been suggested.
Panthera spelaea, also known as the Eurasian cave lion, European cave lion or steppe lion, is an extinct Panthera species that most likely evolved in Europe after the third Cromerian interglacial stage, less than 600,000 years ago. Phylogenetic analysis of fossil bone samples revealed that it was highly distinct and genetically isolated from the modern lion occurring in Africa and Asia.
Crocodylus is a genus of true crocodiles in the family Crocodylidae.
During the Last Glacial Maximum, the mammoth steppe, also known as steppe-tundra, was the Earth's most extensive biome. It spanned from Spain eastward across Eurasia to Canada and from the arctic islands southward to China. The mammoth steppe was cold and dry. The vegetation was dominated by palatable high-productivity grasses, herbs and willow shrubs. The animal biomass was dominated by reindeer, bison, horses, and woolly mammoth. This ecosystem covered wide areas of the northern part of the globe, thrived for approximately 100,000 years without major changes, but then diminished to small regions around 12,000 years ago.
Pleistocene rewilding is the advocacy of the reintroduction of extant Pleistocene megafauna, or the close ecological equivalents of extinct megafauna. It is an extension of the conservation practice of rewilding, which involves reintroducing species to areas where they became extinct in recent history.
Bison occidentalis is an extinct species of bison that lived in North America, and in continental Eurasia and the Japanese archipelago from about 11,700 to 5,000 years ago, spanning the end of the Pleistocene to the mid-Holocene.
Stephanorhinus is an extinct genus of two-horned rhinoceros native to Eurasia and North Africa that lived during the Pliocene to Late Pleistocene. Species of Stephanorhinus were the predominant and often only species of rhinoceros in much of temperate Eurasia, especially Europe, for most of the Pleistocene. Two species of Stephanorhinus – Merck's rhinoceros and the narrow-nosed rhinoceros – persisted into the last glacial period.
Dick "Sir Mammoth" Mol is a Dutch paleontologist - a specialist in the field of mammoths for almost three decades. He is a research associate of several museums. Mol's primary focus is on mammals of the Quaternary period, including mammoths and extinct rhinoceros species.
Xenocretosuchus is an extinct genus of tritylodont therapsids from the Aptian Ilek Formation of Siberia, in the Russian Federation. The type species, X. sibiricus, is known only from dental elements, as is X. kolossovi, described from the Batylykh Formation in 2008. Some authors have treated these species as part of the genus Stereognathus, otherwise known from the Middle Jurassic of Britain But this is rejected by other authors.
The Pleistocene wolf, also referred to as the Late Pleistocene wolf, is an extinct lineage or ecomorph of the grey wolf. It was a Late Pleistocene 129 Ka – early Holocene 11 Ka hypercarnivore. While comparable in size to a large modern grey wolf, it possessed a shorter, broader palate with large carnassial teeth relative to its overall skull size, allowing it to prey and scavenge on Pleistocene megafauna. Such an adaptation is an example of phenotypic plasticity. It was once distributed across the northern Holarctic. Phylogenetic evidence indicates that despite being much smaller than the prehistoric wolf, the Japanese wolf, which went extinct in the early 20th century, was of a Pleistocene wolf lineage, thus extending its survival to several millennia after its previous estimated extinction around 7,500 years ago.
Anser djuktaiensis or Dyuktai goose is an extinct goose, similar to but larger than the extant greylag goose, the remains of which have been found in the Dyuktai Cave near the Dyuktai River in Yakutia, Russia. The cave is dated from Upper Pleistocene to possibly Holocene in age.
Canis mosbachensis, sometimes known as the Mosbach wolf, is an extinct small wolf that once inhabited Eurasia from the Middle Pleistocene era to the Late Pleistocene. It is widely accepted as the ancestor of Canis lupus, the grey wolf.
Khorotherium is a genus of extinct mammaliaforms. The type and only species, Khorotherium yakutensis, is known from the Lower Cretaceous Batylykh Formation in Western Yakutia, Russia. It belongs to the family Tegotheriidae from the order Docodonta, alongside Sibirotherium from the same region, it is amongst the youngest known docodonts.
