Stephanorhinus kirchbergensis Temporal range: | |
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Mostly complete skull from Germany | |
Diagram of skull from Russia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Perissodactyla |
Family: | Rhinocerotidae |
Genus: | † Stephanorhinus |
Species: | †S. kirchbergensis |
Binomial name | |
†Stephanorhinus kirchbergensis (Jäger, 1839) | |
Synonyms | |
List
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Stephanorhinus kirchbergensis, also known as Merck's rhinoceros (or the less commonly, the forest rhinoceros) is an extinct species of rhinoceros belonging to the genus Stephanorhinus from the Early-Middle to Late Pleistocene of Eurasia. Its range spanned from Western Europe to Eastern Asia. Among the last members of the genus, it co-existed alongside Stephanorhinus hemitoechus (the narrow-nosed or steppe rhinoceros) in the western part of its range.
Merck's rhinoceros was a large rhinoceros, with a body mass in the range of 1,500–3,000 kilograms (3,300–6,600 lb), [1] with a particularly large specimen from Poland reaching an estimated height at the withers of 1.82 metres (6.0 ft). [2] It is one of the largest species of Stephanorhinus, exceeding S. hundsheimensis and S. hemitoechus in size. [3] The bones of the skeleton are robust and massive. The skull of Merck's rhinoceros is elongated, with the septum nasalis ossified only towards its anterior (front) end. The mandibular symphysis is relatively long and the mandible has a horizontal high, thick branch. [4]
The enamel of the teeth is very thick, and often bright coloured and smooth, with very thin or absent coronal cement. The buccal (cheek-facing) sides of the teeth often have sub-vertical bluish lines. Tooth dimensions are highly variable in comparison to other Stephanorhinus species. The upper teeth, especially the molars, are much higher towards the buccal side than to the lingual (towards the tongue) side. The ectolophs of the first and second upper molars have shallower folds, especially the fold between the paracone and mesostyle, than those of S. hemitoechus, resulting in a less pronounced undulation. In comparison to other species of Stephanorhinus, the premolars of S. kirchbergensis are mesially (towards the front of the tooth) broad and relatively lingually short. The upper premolar ectoloph folds are shallow, and have narrow anterior valleys. The ectoloph curves strongly mesially and often distally (towards the hind portion of the tooth) towards the inside of the tooth. In both upper molars and premolars, the metalophs and the protolophs are distinctly bulbous. The lower premolars and molars are similar and hard to distinguish. [4]
The species was named by Georg Friedrich von Jäger in 1839 for Kirchberg an der Jagst in Baden-Württemberg, Germany where the type specimens of the species had been found. [5] It is often known in English (and equivalents in other languages) as Merck's rhinoceros after Carl Heinrich Merck, who gave the initial name to the species in 1784 as Rhinoceros incisivus, that is now considered a nomen oblitum , and who after a widely used junior synonym of the species, Rhinoceros merckii (historically several alternate spellings) was named by Johann Jakob Kaup in 1841. [6]
Merck's rhinoceros belongs to the genus Stephanorhinus, which first appeared in Europe during the Late Pliocene, around 3.5 million years ago, and is known from fossils across Eurasia. Mitochondrial and nuclear genomes obtained from Merck's rhinoceros suggest that its closest living relative is the Sumatran rhinoceros (Dicerorhinus sumatrensis), though it shares a closer common ancestry with the extinct woolly rhinoceros (Coelodonta antiquitatis), from which it suggested to have diverged around 5.5 million years ago. [7]
Relationships among Late Pleistocene and modern rhinoceros genera, based on nuclear DNA, after Liu et al., 2021: [7]
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Bayesian morphological phylogeny, after (Pandolfi, 2023) Note: This excludes living African rhinoceros species. [8]
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Its range spans from Europe to East Asia, but appears to be absent from the Iberian Peninsula. [9] [10] It was predominantly present in Europe during interglacial periods where it formed part of the Palaeoloxodon antiquus assemblage, where it occurred alongside the straight-tusked elephant (Palaeoloxodon antquus) and the narrow-nosed rhinoceros (Stephanorhinus hemitoechus). [11] In Europe its range extended northwards to Denmark [12] and southern Britain [9] (though it appears to have been absent from Britain during the Last Interglacial). [13] Its range extended into the Arctic Circle in Eastern Siberia, with a 70–48,000 year old skull known from arctic Yakutia in the Chondon River valley [14] and a late Middle Pleistocene aged lower jaw from the Yana River valley. [15] Teeth are known from caves in Primorsky Krai, suggested to date between 50,000 and 25,000 years ago based on dates of other bones found in the deposit, which are the easternmost known records, [16] along with records from the Middle Pleistocene of western and central Japan (which were previously attributed to the species Dicerorhinus nipponicus). [17] [18] Remains are known from the Caucasus such as from Azokh Cave in Azerbaijan. [19] Previous claimed records from the Levant and North Africa are now thought to erroneous, and attributable to the narrow-nosed rhinoceros or other rhinoceros species. [9] A tooth of S. cf. kirchbergensis of an unknown age is known from the Lut Desert in northeastern Iran. [20] It is fairly common throughout the Pleistocene in North China, [21] but is a rarer component of South Chinese assemblages, [22] being known from around 30 localities in the region. [23] Its range was strongly controlled by glacial cycles, with the species experiencing repeated cycles of expansion and contraction as the ice sheets advanced, this accounts for the relative rarity of its remains in comparison to the woolly rhinoceros. [9]
The earliest definitive records of the species are from Zhoukoudian Locality 13, near Beijing in northern China at around the Early-Middle Pleistocene transition approximately 800,000 years ago. [23] Stephanorhinus yunchuchenensis from Shanxi, China, likely represents a junior synonym of S. kirchbergensis, its precise age is uncertain, but it has been suggested to date to the late Early Pleistocene. [24] S. kirchbergensis appears in Europe during the early Middle Pleistocene between 700,000 and 600,000 years ago, where early on it coexisted with another Stephanorhinus species, S. hundsheimensis. [13]
During the Last Glacial Period, the species range contracted. The timing of its extinction in Europe is uncertain, thought it postdates the end of the Last Interglacial around 115,000 years ago. [25] Radiocarbon dated remains from the Altai date to around 40,000 years ago. [26] The youngest reliable records in China are from the Rhino Cave in Hubei, which is early Late Pleistocene in age. [22] Though less definitive remains are known from near Harbin in Heilongjiang, which are thought to be 20 kya in age. [23] Records from Migong Cave just south of the Yangtze River in the Three Gorges area in northeastern Chongqing are suggested to date to MIS 2 (29,000-14,000 years ago). [27]
Although the species has been referred to as the "forest rhinoceros", the species showed broad environmental tolerances, inhabiting across its range various environments [20] from open habitats like grassland as well as woodlands and forest. [13] Compared to the narrow-nosed rhinoceros, S. hemitoechus, the Merck's rhinoceros did nonetheless show a preference for denser, forested habitat. [28]
Merck's rhinoceros has been interpreted as a browser or a mixed feeder, consuming both browse such as branches and leaves of trees and shrubs, as well as low-lying vegetation. Its diet appears to have varied according to local conditions, though on average its diet included more browse than S. hemitoechus, which in Europe it often co-existed alongside. [29] [30] [13] Analysis of plant material embedded within teeth from the Neumark-Nord locality in Germany found remains of Populus (poplar or aspen) Quercus (oak), Crataegus (hawthorn), Pyracantha , Urtica (nettles) and Nymphaea (water lilies) as well as indeterminate remains of Betulaceae, Rosaceae, and Poaceae (grass). [1] Preserved plant remains found with the teeth on the arctic Chondon skull included twigs of Salix (willow), Betula (birch) and abundant Larix (larch) alongside fragments of Ericaceae (heather); sedges were notably absent. [14] A specimen from Eemian aged deposits in Gorzów Wielkopolski in Poland had twigs of Corylus (hazel), Carpinus (hornbeam), and Viscum (mistletoe), alongside fruit scales of birch, with hazel and birch dominating amongst the pollen. [29] The pollen from a specimen found at Spinadesco in Italy was dominated (~50%) by trees, particularly Alnus (alder) and Fagus (beech), with Hippophae rhamnoides (sea buckthorn), dominating amongst the shrubs, with around 30% of the total contribution being from a variety of herbaceous plants. [31]
Evidence has been found at a number of sites for the exploitation and likely hunting of Merck's rhinoceros by archaic humans.
Cut marks are known on bones of S. kirchbergensis from the Guado San Nicola site in central Italy, which dates to the late Middle Pleistocene, around 400–345,000 years ago. [32] Remains of S. kirchbergensis with cut marks have also been reported from the Medzhibozh locality in western Ukraine, dating to MIS 11, around 425–375,000 years ago. [33] At the collapsed cave of Payre in southeast France, dating to the late Middle Pleistocene, numerous remains of rhinoceroses, primarily S. kirchbergensis and to a lesser exent S. hemitoechus have been found, which are suggested to have been accumulated by Neanderthals, and display marks indicative of butchery. Mortality profiles suggest that young and old individuals were preferentially targeted. The abundance of teeth found at the site (though other skull material is largely absent) suggests that the Neanderthals may have been using them as tools. [34] At the Grays Thurrock site in southern Britain, dating to MIS 9 around 300,000 years ago, both S. kirchbergensis and S. hemitoechus are suggested to have been butchered. [35] At the Taubach travertine site in Thuringia, Germany, which dates to the Eemian (approximately 130,000-115,000 years ago) abundant remains of Merck's rhinoceros with cut marks are known. The vast majority of remains were of young subadults, alongside a much smaller number of adults. It has been suggested that the rhinoceroses were killed and butchered on site by Neanderthals. [36]
Elasmotherium is an extinct genus of large rhinoceros endemic to Eastern Europe and Central Asia with isolated finds from East Asia during Late Miocene through to the Late Pleistocene, with the youngest reliable dates around 39,000 years ago. It was the last surviving member of Elasmotheriinae, a distinctive group of rhinoceroses separate from the group that contains living rhinoceros (Rhinocerotinae).
The woolly rhinoceros is an extinct species of rhinoceros that inhabited 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 range of the woolly rhinoceros contracted towards Siberia beginning around 17,000 years ago, with the youngest known records being around 14,000 years old in northeast Siberia, coinciding with the Bølling–Allerød warming, which likely disrupted its habitat, with environmental DNA records possibly extending the range of the species around 9,800 years ago. Its closest living relative is the Sumatran rhinoceros.
A rhinoceros, commonly abbreviated to rhino, is a member of any of the five extant species of odd-toed ungulates in the family Rhinocerotidae; it can also refer to a member of any of the extinct species of the superfamily Rhinocerotoidea. Two of the extant species are native to Africa, and three to South and Southeast Asia.
Diceros is a genus of rhinoceros containing the extant black rhinoceros (Diceros bicornis) and several extinct species.
Dicerorhinus is a genus of the family Rhinocerotidae, consisting of a single extant species, the two-horned Sumatran rhinoceros, and several extinct species. The genus likely originated from the Late Miocene of central Myanmar. Many species previously placed in this genus probably belong elsewhere.
Ceratotherium is a genus of the family Rhinocerotidae, consisting of a single extant species, the white rhinoceros, as well as several fossil species.
Rhinoceros is a genus comprising one-horned rhinoceroses. This scientific name was proposed by Swedish taxonomist Carl Linnaeus in 1758. The genus contains two species, the Indian rhinoceros and the Javan rhinoceros. Although both members are threatened, the Javan rhinoceros is one of the most endangered large mammals in the world with only 60 individuals surviving in Java (Indonesia). The word 'rhinoceros' is of Greek origin meaning "nose-horn".
Stegodon is an extinct genus of proboscidean, related to elephants. It was originally assigned to the family Elephantidae along with modern elephants but is now placed in the extinct family Stegodontidae. Like elephants, Stegodon had teeth with plate-like lophs that are different from those of more primitive proboscideans like gomphotheres and mammutids. Fossils of the genus are known from Africa and across much of Asia, as far southeast as Timor. The oldest fossils of the genus are found in Late Miocene strata in Asia, likely originating from the more archaic Stegolophodon, subsequently migrating into Africa. While the genus became extinct in Africa during the Pliocene, Stegodon persisted in South, Southeast and Eastern Asia into the Late Pleistocene.
Coelodonta is an extinct genus of Eurasian rhinoceroses that lived from about 3.7 million years to 14,000 years ago, in the Pliocene and the Pleistocene epochs. It is best known from the type species, the woolly rhinoceros, which ranged throughout northern Eurasia during the Pleistocene. The earliest known species, Coelodonta thibetana, lived in Tibet during the Pliocene, with the genus spreading to the rest of Eurasia during the Pleistocene.
The European wild ass or hydruntine is an extinct equine from the Middle Pleistocene to Late Holocene of Europe and West Asia, and possibly North Africa. It is a member of the subgenus Asinus, and closely related to the living Asiatic wild ass. The specific epithet, hydruntinus, means from Otranto.
The straight-tusked elephant is an extinct species of elephant that inhabited Europe and Western Asia during the Middle and Late Pleistocene. One of the largest known elephant species, mature fully grown bulls on average had a shoulder height of 4 metres (13 ft) and a weight of 13 tonnes (29,000 lb). Straight-tusked elephants likely lived very similarly to modern elephants, with herds of adult females and juveniles and solitary adult males. The species was primarily associated with temperate and Mediterranean woodland and forest habitats, flourishing during interglacial periods, when its range would extend across Europe as far north as Great Britain and eastwards into Russia, while persisting in southern Europe during glacial periods. Skeletons found in association with stone tools and wooden spears suggest they were scavenged and hunted by early humans, including Homo heidelbergensis and their Neanderthal successors.
Anancus is an extinct genus of "tetralophodont gomphothere" native to Afro-Eurasia, that lived from the Tortonian stage of the late Miocene until its extinction during the Early Pleistocene, roughly from 8.5–2 million years ago.
Panthera fossilis is an extinct species of cat belonging to the genus Panthera, known from remains found in Eurasia spanning the Middle Pleistocene and possibly into the Early Pleistocene.
Swanscombe Skull Site or Swanscombe Heritage Park is a 3.9-hectare (9.6-acre) geological Site of Special Scientific Interest in Swanscombe, north-west Kent, England. It contains two Geological Conservation Review sites and a National Nature Reserve. The park lies in a former gravel quarry, Barnfield Pit, which is the most important site in the Swanscombe complex, alongside several other nearby pits.
Stephanorhinus is an extinct genus of two-horned rhinoceros native to Eurasia and North Africa that lived during the Late 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. The last two species of Stephanorhinus – Merck's rhinoceros and the narrow-nosed rhinoceros – went extinct during the last glacial period.
The narrow-nosed rhinoceros, also known as the steppe rhinoceros is an extinct species of rhinoceros belonging to the genus Stephanorhinus that lived in western Eurasia, including Europe, as well as North Africa during the Pleistocene. It first appeared in Europe around 500,000 years ago during the Middle Pleistocene and survived there until at least 34,000 years Before Present. It was native to temperate and Mediterranean environments, where it fed on low growing plants and to a lesser extent woody plants. Evidence has been found that it was exploited for food by archaic humans, including Neanderthals.
Bubalus murrensis, also known as European water buffalo, is an extinct water buffalo species native to Europe during the Pleistocene epoch, possibly persisting into the Holocene.
Nesorhinus is an extinct genus of rhinoceros from the Pleistocene of Asia. It contains two species, Nesorhinus philippinensis from Luzon, Philippines and Nesorhinus hayasakai from Taiwan.
Dihoplus is an extinct genus of rhinoceros that lived in Eurasia from the Late Miocene to Pliocene.
Pliorhinus is an extinct genus of rhinoceros known from the Late Miocene and Pliocene of Eurasia. The type species, Pliorhinus megarhinus, was previously assigned to Dihoplus.