Elephas hysudrindicus

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Elephas hysudrindicus
Temporal range: Pleistocene
Bandung Museum Geologi, Ruang Sejarah Kehidupan 03.jpg
Elephas hysudrindicus in the Bandung Geological Museum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Proboscidea
Family: Elephantidae
Genus: Elephas
Species:
E. hysudrindicus
Binomial name
Elephas hysudrindicus
Dubois, 1908
Indonesia Java relief location map.png
Red pog.svg
Sunggun Archaeological Site in Blora, Java

Elephas hysudrindicus, commonly known also as the Blora elephant in Indonesia (lit. Gajah Blora in Indonesian), is a species of extinct elephant from the Pleistocene of Java. It is anatomically distinct from the Asian elephant, the last remaining species of elephant under the genus Elephas . [1] [2] The species existed from around the end of the Early Pleistocene until the end of the Middle Pleistocene, when it was replaced by the modern Asian elephant in Java. It coexisted with the fellow proboscidean Stegodon trigonocephalus, as well as archaic humans belonging to the species Homo erectus . [3] [4]

Contents

Taxonomy

When Eugène Dubois described the species in 1908, he failed to designate a holotype specimen. In 2017, the partial skull RGM.DUB 4968–4969 in the collections of the Naturalis Biodiversity Center, Leiden was designated the lectotype. It was excavated in Tinggang, Bojonegoro, and was Dubois' original fossil material. [2] It is considered to be closely related to the extinct Elephas hysudricus of mainland Asia, [5] which it is possibly descended from. [6]

A fossil was excavated from Sunggun archaeological site, Medalem, Kradenan Subregency, Blora in March 2009. It was excavated 13 kilometres west of the original Tinggang site [7] and was found almost completely intact (estimating about 90%), about a few feet under the dirt in a former sand quarry in the village. [8] [9] Both the skull and mandible were found to possess complete grinding molars, indicating that the individual was an adult specimen by time of death. [7] It was then brought to the Bandung Geological Museum which was then put to display. [10]

Ecology

Isotopic analysis suggests a primarily C4 grazing dominated diet, similar to that inferred for Stegodon trigonocephalus, suggesting that they occupied open habitats on the island. [3]

See also

Related Research Articles

<span class="mw-page-title-main">Proboscidea</span> Order of mammals including elephants

Proboscidea is a taxonomic order of afrotherian mammals containing one living family (Elephantidae) and several extinct families. First described by J. Illiger in 1811, it encompasses the elephants and their close relatives. Three species of elephant are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant.

<span class="mw-page-title-main">Elephantidae</span> Family of mammals

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

<span class="mw-page-title-main">Java Man</span> Subspecies of Homo erectus (fossil) discovered on the island of Java in 1891

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<i>Elephas</i> Genus of mammals

Elephas is one of two surviving genera in the family of elephants, Elephantidae, with one surviving species, the Asian elephant, Elephas maximus. Several extinct species have been identified as belonging to the genus, extending back to the Pliocene or possibly the late Miocene.

<i>Palaeoloxodon</i> Genus of extinct elephants

Palaeoloxodon is an extinct genus of elephant. The genus originated in Africa during the Early Pleistocene, and expanded into Eurasia at the beginning of the Middle Pleistocene. The genus contains the largest known species of elephants, over 4 metres (13 ft) tall at the shoulders and over 13 tonnes (29,000 lb) in weight, representing among the largest land mammals ever, including the African Palaeoloxodon recki, the European straight-tusked elephant and the South Asian Palaeoloxodon namadicus. P. namadicus has been suggested to be the largest known land mammal by some authors based on extrapolation from fragmentary remains, though these estimates are highly speculative. In contrast, the genus also contains many species of dwarf elephants that evolved via insular dwarfism on islands in the Mediterranean, some like Palaeoloxodon falconeri less than 1 metre (3.3 ft) in shoulder height as fully grown adults, making them the smallest elephants known. The genus has a long and complex taxonomic history, and at various times, it has been considered to belong to Loxodonta or Elephas, but today is usually considered a valid and separate genus in its own right.

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<i>Stegodon</i> Genus of extinct proboscidean

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.

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<i>Stegodon aurorae</i> Species of fossil elephantoid

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<span class="mw-page-title-main">Archaic humans in Southeast Asia</span>

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<i>Stegoloxodon</i> Extinct genus of dwarf elephant

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References

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  8. webadmin. "Replika Fosil Gajah Purba Blora Bisa Dikunjungi Setiap Hari". Pemerintah Kabupaten Blora. Retrieved 2021-08-30.
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