MORITHERIUM. The most ancient of known Proboscidea.
The fossil remanes of Moritherium are found in Northern Africa, their age
about 40 millions years (Late Eocene). It were small, up to 1 meter in
height, animal - amphibians. Moritherium have appeared a deadlock branch
in evolution of Proboscidea.
DEINOTHERIUM. Ancient Proboscidea, arisen in Africa in Miocene about
24 millions years ago. In Pleistocene were widespread in Eurasia. Into
Northern America did not penetrate. Have died out about 2 millions years
ago. Original tusks were only in mandible. During evolution deinotherium
became larger, up to 4 meters in height. A lateral branch of evolutionary
development of Proboscidea.
PALAEOMASTODON. Are known only from Late Eocene (40 millions years
ago) Northern Africa. One of most ancient Proboscidea,a beginning to families
Gomphotheria and Mastodontidae. Tusks had small, oval in section, both
in top and in bottom jaws. Between of tusks and cheek teeth was available
diastema (interval). Trunk small. From all ancient Proboscidea palaeomastodon
more others are similar to modern elephants.
AMEBELODON. Amebelodon - the genus of mastodon belonging to family
Gomrhotheriidae, was usual in Northern America in Late Miocene (about 24
millions years ago). Top tusks were small, while bottom - large size and
plantical. Probably bottom tusks amebelodon dug out roots of plants.
PLATIBELEDON. Fossil remains of platibelodon were found for the
first time only in 1920 in Miocene deposits (about 20 millions years ago)in
Asia. In the mandibule original tusk like spade, excellently adapted to
extraction of water and marsh vegetation, with which ate platibelodon.
In it platibelodon is comparable with American amebelodon.
GOMPHOTHERIUM. Gonphotherium - mastodon, usual in Africa about
20 millions years ago, was settled from Africa through Europe in Asia down
to Indostan. Equally were well advanced top and bottom tusks. Lived most
likely in humidified, marshy landscapes, for the benefit of what speak
strongly lengthened to a jaw.
MASTODONT. The separate family Mastodontidae, has arisen in Middle
Oligocene (30 millions years ago) in Africa. The representatives of this
family were settled on all Africa, Eurasia and America in Miocene (about
24 millions years ago). Mastodons were kept in Northern America up to the
end Pleistocene. The age of some fossil remains of mastodont only 10.000
years, that meets to time of development like culture of primitive inhabitant
of North America. It were large Probocsidea, at which the chewing surface
of cheek teeth was covered with lines large hills. At mastodont were large
top tusks and, occasionally, at male, small bottom. It is possible, that
the disappearance of mastodont was promoted by a hunt on them ancient primitive
inhabitant of North America.
STEGODON. Stegodon - representatives of separate family close the
relatives to family of elephants (where enters and mammoth). The most ancient
finds in Asia are dated 8 millions years (End Miocene). Were settled on
Europe and Africa later. By the sizes were similar to modern elephants,
top tusks were long and massive. Ate stegodon branches and foliage of trees.
FIST ELEPHANT (PRIMELEPHAS). The family of elephants - Elephantidae,
includes of mammoth and nowadays living elephants. As against mastodons,
cheek teeth at the representatives of this family with cross crests, and
tusks without enamel. The most primitive representative of family is Primelephas,
which probably is a direct ancestor of mammoths and modern elephants. It
fossil remains are found in Central Africa and are dated the End Miocene
- 5 millions years ago. A probable place of living of Primelephas was wood
areas. The sizes of Primelephas are compared to a modern Indian elephant
- height in shoulders about 3 meters. As against other elephants at Primelephas
were small tusks in the bottom jaw.
SOUTHERN ELEPHANT (ARCHIDISKODON MERIDIONALIS). The most ancient
finds of mammoths occur in Early Pliocene of East and Southern Africa about
4 millions years ago. Just in the south of Africa there was most favorable
landscape conditions for existence of mammoths. Usually mammoth allocate
in separate subfamily Mammuthinae, which is characterized by a skull with
circle by top, without ÓÅÄÌÏ×ÉÄÎÏÇÏ ×ÄÁ×ÌÅÎÉÑ. The bones between mandible
are narrowed from sides in the average part. The tusks have spiral curved.
The evolution of mammoth went on a way of the adaptation to inhabit in
conditions steppe and forest-steppe of landscapes. First mammoth belonged
to a genus Archidiskodon. The representatives of this genus were settled
from Africa in Eurasia and Northern America. In Pleistocene these mammoth
have generated uniform Eurasia-American Ariel, after penetration of a southern
elephant (Archidiskodon meridionalis) in Northern America of 1.5 million
years ago. In territory of Eurasia the southern elephant is a direct ancestor
steppe mammoth and Mammuthus primigenius. In Northern America, in opinion
of many experts, the southern elephant has become an ancestor of Colombian
mammoth. First mammoths were large elephants of height up to 4.5 meters
in shoulders.
STEPPE MAMMOTH (MAMMUTHUS TROGONTHERII). Direct descendant of a
southern elephant in territory of Eurasia has become steppe mammoth Mammuthus
trogontherii. It was the huge elephant, height up to 5 meters. The mineral
rests are known with early Pleistocene from steppe and forest-steppe of
zones of Eurasia. Probably to the same kind belongs Middle Pleistocene
Hazaricus mammoth, which is a transitive part from steppe mammoth to Mammuthus
primigenius. The significant climatic changes come in Eurasia in Middle
Pleistocene and which have expressed in cold and strengthening worm, have
resulted in a wide circulation of an opened landscape such as arctic steppe,
tundra and forest-tundra’s. Under influence changes of natural conditions
mammoths were compelled to adapt to a feed rigid grassy and bushes by vegetation.
COLOMBIAN MAMMOTH. Colombian mammoth inhabited in Northern America
on the Middle and Late Pleistocene. On a degree of evolution corresponded
Eurasian steppe mammoth, however, was kept in America almost up to the
End Pleistocene. Its sizes strongly varied from dwarfs on islands Channel
(California), height about 1.8 meters, up to the giants, height 4-4.5 meters
in southern areas of Northern America. By the End Pleistocene there were
isolated populations Colombian mammoth, smaller under influence of isolation
and described as Dzefersons mammoth. Finally mammoths in America have disappeared
12 thousands years ago, not without the help primitive inhabited of North
America.
MAMMOTH IN TUNDRA. Systematic is a classification of animals to
related attributes. Many forms of Mammuthus primigenius of a different
rank are described, which systematic situation is not clear. Besides in
stratigraphic two not designated forms quite often are specified: early
and late, that causes mess in systematic. Except subspecies Mammuthus primigenius
primigenius, inhabited in the End Pleistocene in Northern Eurasia, it is
possible to specify still only one Holocene subspecies from an Vrangels
island - Mammuthus primigenius Vrangeliensis. As a whole subspecies systematic
of mammoth is developed not enough more and requires auditing. On morphology
of teeth and skeleton mammoths are closer to modern Asian elephants, but
not to African.
ASIAN ELEPHANT (ELEPHAS MAXIMUS). Isolated populations of Asian
or Indian elephants (Elephas maximus) inhabited in Southern and South-East
Asia. In some countries on the verge of disappearance (China, Nepal, Bangladesh).
Weight of adult elephants of 3-5 tons, height in shoulders 2-3.5 meters.
Inhabited basically in woods, eating branch and foliage. At female practically
is not present tusks, tusks of male the lengths of 2 meters reach. There
are three subspecies of an Asian elephant - elephants of an island Sri-Lanka,
elephants of an island Sumatra and continental subspecies.
The Asian elephant is very obedient and is clever. Frequently is used
as a home animal for moving weights and other works on Sri-Lanka and in
South-East Asia. The usual participant of circus representations and inhabited
of zoos.
AFRICAN ELEPHANT (LOXODONTA AFRICANA). The African elephant - largest
ground animal, adult male weight up to 7 tons, reaching in height of 4
meters. Inhabited in Central and Southern Africa. Distinguish two subspecies
- steppe and wood. First subspecies lives in opened steppe and deserts
(Namibia), eating in the basic grass. The wood elephant lives in jungle,
fed brunches of trees and bushes, and water vegetation. A steppe elephant
is larger wood. Tusk have female and male elephant, at male they huge,
up to 3.5 meters in length and weight up to 100 kg.
A line of analogies connecting landscapes tundra-steppe of Pleistocene
of Eurasia and steppe of Africa is established. For example, the African
elephants, destroying wood vegetation, promote formation of steppe. As
well, mammoths expanded area tundra-steppe, trample down bushes and breaking
trees. Thus, these giants created conditions of life for tens others inhabits
of opened spaces.