''Mammuthus meridionalis'', or the southern mammoth, is an extinct species of

mammoth A mammoth is any species of the extinct elephantid genus ''Mammuthus'', one of the many genera that make up the order of trunked mammals called proboscideans. The various species of mammoth were commonly equipped with long, curved tusks an ...

native to

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located entirel ...

and

Central Asia Central Asia, also known as Middle Asia, is a subregion, region of Asia that stretches from the Caspian Sea in the west to western China and Mongolia in the east, and from Afghanistan and Iran in the south to Russia in the north. It includes t ...

from the

Gelasian The Gelasian is an age in the international geologic timescale or a stage in chronostratigraphy, being the earliest or lowest subdivision of the Quaternary Period/System and Pleistocene Epoch/Series. It spans the time between 2.58 Ma (million ye ...

stage of the Early

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

, living from 2.5–0.8 mya.

Taxonomy

The taxonomy of extinct elephants was complicated by the early 20th century, and in 1942,

Henry Fairfield Osborn Henry Fairfield Osborn, Sr. (August 8, 1857 – November 6, 1935) was an American paleontologist, geologist and eugenics advocate. He was the president of the American Museum of Natural History for 25 years and a cofounder of the American Euge ...

's posthumous monograph on the Proboscidea was published, wherein he used various taxon names that had previously been proposed for mammoth species, including replacing ''Mammuthus'' with ''Mammonteus'', as he believed the former name to be invalidly published. Mammoth taxonomy was simplified by various researchers from the 1970s onwards, all species were retained in the genus ''Mammuthus'', and many proposed differences between species were instead interpreted as intraspecific variation. The name ''Archidiskodon meridionalis'' is retained by some Russian researchers.

Evolution

The earliest known members of Proboscidea, the clade which contains modern elephants, existed about 55 million years ago around the

Tethys Sea The Tethys Ocean ( el, Τηθύς ''Tēthús''), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean that covered most of the Earth during much of the Mesozoic Era and early Cenozoic Era, located between the ancient continents ...

. The closest known relatives of the Proboscidea are the

sirenians The Sirenia (), commonly referred to as sea-cows or sirenians, are an order of fully aquatic, herbivorous mammals that inhabit swamps, rivers, estuaries, marine wetlands, and coastal marine waters. The Sirenia currently comprise two distinct f ...

(dugongs and manatees) and the

hyraxes Hyraxes (), also called dassies, are small, thickset, herbivorous mammals in the order Hyracoidea. Hyraxes are well-furred, rotund animals with short tails. Typically, they measure between long and weigh between . They are superficially simi ...

(an order of small, herbivorous mammals). The family

Elephantidae Elephantidae is a family of large, herbivorous proboscidean mammals collectively called elephants and mammoths. These are terrestrial large mammals with a snout modified into a trunk and teeth modified into tusks. Most genera and species in the ...

existed six million years ago in Africa and includes the modern elephants and the mammoths. Among many now extinct clades, the

mastodon A mastodon ( 'breast' + 'tooth') is any proboscidean belonging to the extinct genus ''Mammut'' (family Mammutidae). Mastodons inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of th ...

(''Mammut'') is only a distant relative of the mammoths, and part of the separate family

Mammutidae Mammutidae is an extinct family of proboscideans that appeared during the Oligocene epoch and survived until the start of the Holocene. The family was first described in 1922, classifying fossil specimens of the type genus ''Mammut'' ( masto ...

, which diverged 25 million years before the mammoths evolved. The following

cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ...

shows the placement of the genus ''Mammuthus'' among other proboscideans, based on characteristics of the hyoid bone in the neck: Southern Mammoth Mammuthus meridionalis

Since many remains of each species of mammoth are known from several localities, it is possible to reconstruct the evolutionary history of the genus through morphological studies. Mammoth species can be identified from the number of enamel ridges (or lamellar plates) on their molars: primitive species had few ridges, and the number increased gradually as new species evolved to feed on more abrasive food items. The crowns of the teeth became deeper in height and the skulls became taller to accommodate this. At the same time, the skulls became shorter from front to back to minimise the weight of the head.

The first known members of the genus ''Mammuthus'' are the African species '' M. subplanifrons'' from the

Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58M. africanavus'' from the

. The former is thought to be the ancestor of later forms. Mammoths entered Europe around 3 million years ago. The earliest European mammoth has been named '' M. rumanus''; it spread across Europe and China. Only its molars are known, which show that it had 8–10 enamel ridges. A population evolved 12–14 ridges, splitting off from and replacing the earlier type, becoming ''M. meridionalis'' about 2–1.7 million years ago. In turn, this species was replaced by the steppe mammoth (''M. trogontherii'') with 18–20 ridges, which evolved in eastern Asia around 2–1.5 million years ago. The Columbian mammoth evolved from a population of ''M. trogontherii'' that had crossed the Bering Strait and entered North America about 1.5 million years ago; it retained a similar number of molar ridges. Steppe mammoths replaced southern mammoths in Europe in a diachronous mosaic pattern between 1 and 0.8-0.7 million years ago. Mammoths derived from ''M. trogontherii'' evolved molars with 26 ridges 400,000 years ago in Siberia and became the woolly mammoth (''M. primigenius''). A 2015 study of mammoth molars confirmed that ''M. columbi'' evolved from Eurasian ''M. trogontherii'', not ''M. meridionalis'' as had been suggested earlier. This was confirmed by a 2016 a genetic study of North American mammoth specimens.

Description

With a shoulder height of about and an estimated weight of , ''M. meridionalis'' is one of the largest proboscideans to have ever lived, along with other larger species of mammoth, and the earlier '' Deinotherium''. Another estimate gives a shoulder height of and a weight of . Cranium fossils of the ''M. meridionalis'' found in

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...

show the length of the

skull The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, th ...

to be 1.25 - 1.54 meters long, with

tusk Tusks are elongated, continuously growing front teeth that protrude well beyond the mouth of certain mammal species. They are most commonly canine teeth, as with pigs and walruses, or, in the case of elephants, elongated incisors. Tusks share ...

lengths of 72 - 85 centimetres. It had robust twisted tusks, common of mammoths. Its molars had low

crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, partic ...

s and a small number of thick enamel ridges, adapted to a woodland diet of leaves and shrubs; this indicates it lived on a relatively warm climate, which makes it more probable that it lacked dense fur. Mammuthus meridionalis reconstruction 2

Distribution and habitat

Fossilized plants found with the remains show that ''M. meridionalis'' was living in a time of mild climate, generally as warm or slightly warmer than Europe experiences today. Deciduous mixed wood provided its habitat and food, which consisted mostly of tree-browse:

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

, ash, beech and other familiar European trees, as well as some that are now exotic to the region, such as hemlock, wing nut and hickory. Complete skeletons are in

Stavropol Stavropol (; rus, Ставрополь, p=ˈstavrəpəlʲ) is a city and the administrative centre of Stavropol Krai, Russia. As of the 2021 Census, its population was 547,820, making it one of Russia's fastest growing cities. It was known as ...

State Museum in

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

,in L'Aquila National Museum and in

Firenze Florence ( ; it, Firenze ) is a city in Central Italy and the capital city of the Tuscany region. It is the most populated city in Tuscany, with 383,083 inhabitants in 2016, and over 1,520,000 in its metropolitan area.Bilancio demografico an ...

at the

Museo di Storia Naturale di Firenze The Museo di Storia Naturale di Firenze is a natural history museum in 6 major collections, located in Florence, Italy. It is part of the University of Florence. Museum collections are open mornings except Wednesday, and all day Saturday; an adm ...

. Further east, discoveries at Ubeidiya (

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

) and

Dmanisi Dmanisi ( ka, დმანისი, tr, , az, Başkeçid) is a town and archaeological site in the Kvemo Kartli region of Georgia approximately 93 km southwest of the nation’s capital Tbilisi in the river valley of Mashavera. The hominin ...

(

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

) show the early mammoth living in a partially open habitat with grassy areas, though subsisting on scattered trees and shrubs. The microscopic scratches and pits in the dental enamel on the fossils of ''M. meridionalis'' suggest that the species was a browser, feeding on any

foliage A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, s ...

of high-growing plants.

References

Bibliography

External links

{{Taxonbar, from=Q550390 Pleistocene mammals of Asia Mammoths Pleistocene proboscideans