Bohra (genus)

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Bohra
Temporal range: Pliocene - Late Pleistocene
Bohra paulae.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Family: Macropodidae
Subfamily: Macropodinae
Genus: Bohra
Flannery & Szalay, 1982 [1]
Type species
Bohra paulae
Flannery & Szalay, 1982
Species
  • B. bandharr
  • B. bila
  • B. illuminata
  • B. nullarbora
  • B. paulae
  • B. planei
  • B. wilkinsonorum

Bohra is an extinct genus of macropod from the Plio-Pleistocene of Australia. It is closely related to modern tree kangaroos (Dendrolagus), and like them is thought to have had an arboreal lifestyle, with some species of Bohra substantially exceeding living tree kangaroos in size.

Contents

Taxonomy

Life restoration of B. paulae Giant Tree Kangaroo (Bohra paulae).png
Life restoration of B. paulae

The type species, Bohra paulae was first described in 1982 from material found in Wellington Caves in New South Wales. [2] [3] Bohra is the name of a legendary kangaroo of the Euahlayi tribe from New South Wales. Bohra was said to walk on all four limbs and possessed sharp canine teeth before being removed by men. Living tree-kangaroos share similar proportions between the front and hind limbs. [2]

Three other species have been described: Bohra wilkinsonorum from southeastern Queensland in 2004, [4] Bohra illuminata from south-central Australia in 2008, [5] and Bohra nullarbora from Western Australia in 2009. [6]

Bohra is considered a plesiomorphic sister taxon to the living tree-kangaroos (Dendrolagus). [2]

Description

Size of B. paulae compared to 180 cm man and Dendrolagus goodfellowi Bohra-size-comparison.png
Size of B. paulae compared to 180 cm man and Dendrolagus goodfellowi

Some species of Bohra like Bohra paula and Bohra wilkinsonorum were much larger than any tree-kangaroo, with estimated body masses of 35–47 kg (77–104 lb). [7] They many similarities with tree-kangaroos in their cranio-dental and hind limb morphology, [8] and in spite of its size, shows many of the same arboreal adaptations as its living relatives. Among the similarities are the calcaneus being flat and broad with the cuboid articulation not being stepped and the height-to-width ratio of the articulation being much smaller than in that of other types of kangaroos. [2] Compared to living tree kangaroos, the species of Bohra are distinguished by proportionally larger cheek teeth and longer upper incisors. [7]

Remains of Bohra illuminata also show morphological similarities to rock wallabies (Petrogale); recent molecular studies suggest that rock wallabies are the closest living relatives of tree-kangaroos, further proving Bohra is of close relation to these groups. [5]

Distribution and habitat

Bohra wilkinsonorum is the oldest species (Pliocene), while the remaining species are of Pleistocene age. All species of Bohra inhabited regions more southerly than any tree-kangaroo, including the now treeless Nullarbor plain. Given the arboreal nature of Bohra, it seems many regions of Australia were able to better support tree cover in the recent past. [6] The youngest records of Bohra dates to around the Late Pleistocene, though the precise timing of extinction is uncertain due to a lack of precise dating on remains, though they may have persisted as recently as 22,000 years ago based on Dendrolagus-like DNA found in indeterminate bone fragments from Tunnel Cave in Southwestern Australia. [7]

Related Research Articles

<span class="mw-page-title-main">Diprotodontia</span> Order of marsupial mammals

Diprotodontia is the largest extant order of marsupials, with about 155 species, including the kangaroos, wallabies, possums, koala, wombats, and many others. Extinct diprotodonts include the hippopotamus-sized Diprotodon, and Thylacoleo, the so-called "marsupial lion".

<span class="mw-page-title-main">Tree-kangaroo</span> Genus of marsupials

Tree-kangaroos are marsupials of the genus Dendrolagus, adapted for arboreal locomotion. They inhabit the tropical rainforests of New Guinea and far northeastern Queensland, along with some of the islands in the region. All tree-kangaroos are considered threatened due to hunting and habitat destruction. They are the only true arboreal macropods.

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

Macropodidae is a family of marsupials that includes kangaroos, wallabies, tree-kangaroos, wallaroos, pademelons, quokkas, and several other groups. These genera are allied to the suborder Macropodiformes, containing other macropods, and are native to the Australian continent, New Guinea and nearby islands.

<span class="mw-page-title-main">Potoroidae</span> Family of marsupials

Potoroidae is a family of marsupials, small Australian animals known as bettongs, potoroos, and rat-kangaroos. All are rabbit-sized, brown, jumping marsupials and resemble a large rodent or a very small wallaby.

<span class="mw-page-title-main">Pademelon</span> Small arboreal marsupial

Pademelons are small marsupials in the genus Thylogale, found in Australia and New Guinea. They are some of the smallest members of the macropod family (Macropodidae), which includes the similar-looking but larger kangaroos and wallabies. Pademelons are distinguished by their small size and their short, thick, and sparsely-haired tails. Like most other marsupials, they carry their young in a pouch.

<span class="mw-page-title-main">Banded hare-wallaby</span> Species of marsupial

The banded hare-wallaby, mernine, or munning is a marsupial currently found on the islands of Bernier and Dorre off western Australia. Reintroduced populations have recently been established on islands and fenced mainland sites, including Faure Island and Wadderin Sanctuary near Narembeen in the central wheatbelt.

<span class="mw-page-title-main">Sthenurinae</span> Extinct subfamily of marsupials

Sthenurinae is a subfamily within the marsupial family Macropodidae, known as short-faced kangaroos or sthenurine kangaroos. No members of this subfamily are extant today, with all becoming extinct by the late Pleistocene. Procoptodon goliah, the largest macropodid known to have existed, was a sthenurine kangaroo, but sthenurines occurred in a range of sizes, with Procoptodon gilli being the smallest at the size of a small wallaby.

<i>Palorchestes</i> Extinct genus of marsupial

Palorchestes is an extinct genus of large terrestrial, herbivorous Australian marsupial of the family Palorchestidae, living from the Miocene through to the Late Pleistocene. Like other palorchestids, it had highly retracted nasal region suggesting that it had a prehensile lip, as well as highly unusual clawed forelimbs that were used to grasp vegetation.

<i>Sthenurus</i> Extinct genus of marsupials

Sthenurus is an extinct genus of kangaroos. With a length around 3 m (10 ft), some species were twice as large as modern extant species. Sthenurus was related to the better-known Procoptodon. The subfamily Sthenurinae is believed to have separated from its sister taxon, the Macropodinae, halfway through the Miocene, and then its population grew during the Pliocene.

<span class="mw-page-title-main">Macropodiformes</span> Suborder of marsupials

The Macropodiformes, also known as macropods, are one of the three suborders of the large marsupial order Diprotodontia. They may in fact be nested within one of the suborders, Phalangeriformes. Kangaroos, wallabies and allies, bettongs, potoroos and rat kangaroos are all members of this suborder.

<span class="mw-page-title-main">Western brush wallaby</span> Species of marsupial

The western brush wallaby, also known as the black-gloved wallaby, is a species of wallaby found in the southwestern coastal region of Western Australia. The wallaby's main threat is predation by the introduced red fox. The IUCN lists the western brush wallaby as Least Concern, as it remains fairly widespread and the population is believed to be stable or increasing, as a result of red fox control programs.

<span class="mw-page-title-main">Northern nail-tail wallaby</span> Species of marsupial

The northern or sandy nail-tail wallaby is a species of macropod found across northern Australia on arid and sparsely wooded plains. The largest species of the genus Onychogalea, it is a solitary and nocturnal herbivorous browser that selects its food from a wide variety of grasses and succulent plant material. Distinguished by a slender and long-limbed form that resembles the typical and well known kangaroos, although their standing height is shorter, around half of one metre, and their weight is less than nine kilograms. As with some medium to large kangaroo species, such as Osphranter rufus, they have an unusual pentapedal motion at slow speeds by stiffening the tail for a fifth limb. When fleeing a disturbance, they hop rapidly with the tail curled back and repeatedly utter the sound "wuluhwuluh". Their exceptionally long tail has a broad fingernail-like protuberance beneath a dark crest of hair at its end, a peculiarity of the genus that is much broader than the other species. The name unguifera, meaning claw, is a reference to this extraordinary attribute, the purpose of which is unknown.

<i>Protemnodon</i> Extinct genus of marsupials

Protemnodon is an extinct genus of megafaunal macropodids that existed in Australia, Tasmania, and New Guinea in the Pliocene and Pleistocene. Members of this genus are also called giant kangaroos.

<i>Simosthenurus</i> Extinct genus of marsupials

Simosthenurus, also referred to as the short-faced kangaroo, is an extinct genus of megafaunal macropods that existed in Australia, specifically Tasmania, during the Pleistocene. Analysis of Simosthenurus fossils has contributed to the finding that there are three lineages of macropods: Sthenurinae, Macropodinae, and Lagostrophinae. The genus Simosthenurus was among the sthenurines.

<span class="mw-page-title-main">Grizzled tree-kangaroo</span> Species of marsupial

The grizzled tree-kangaroo is a furry, long-tailed, bear-like mammal native to tropical rainforests on the island of New Guinea. Like most tree-kangaroos, it lives in trees and eats leaves, fruit, and bark. It is a member of the macropod family Macropodidae with kangaroos, and carries its young in a pouch like other marsupials. The tree-kangaroo is uncommon and threatened by hunting and habitat loss. It is found in foothill forests of northern and western New Guinea and is indigenous to some of the offshore islands.

<span class="mw-page-title-main">Ursine tree-kangaroo</span> Species of marsupial

The ursine tree-kangaroo is a long-tailed, furry, bear-like mammal found only in tropical forests on the island of New Guinea. Slightly larger than a cat, it lives alone in trees and is active at night to feed on leaves and fruit. It belongs to the macropod family (Macropodidae) with kangaroos, and carries its young in a pouch like other marsupials. It has a small range in northwestern New Guinea and is threatened by habitat loss and hunting. Other common names for this species include the black tree-kangaroo, the Vogelkop tree-kangaroo and the white-throated tree-kangaroo.

<span class="mw-page-title-main">Macropodinae</span> Subfamily of marsupials

Macropodinae is a subfamily of marsupials in the family Macropodidae, which includes the kangaroos, wallabies, and related species. The subfamily includes about ten genera and at least 51 species. It includes all living members of the Macropodidae except for the banded hare-wallaby, the only surviving member of the subfamily Lagostrophinae.

<i>Notamacropus</i> Genus of marsupials

Notamacropus is a genus of small marsupials in the family Macropodidae, commonly known as wallabies. The term is derived from the Latin nota "stripe" and macropus "kangaroo", referencing the distinct facial stripe of many extant genus members and their phylogenetic relationship to other kangaroos.

Macropus pan is a species of marsupial that existed during the Pliocene in Australia, known only from fossils located at several sites across Australia. The species is recognised as allied to the modern grey kangaroos, the western Macropus fuliginosus and eastern Macropus giganteus, in a clade initially named as subgenus Macropus (Macropus) Dawson & Flannery. The first description was provided by Charles W. De Vis in 1895, emerging from the author's examination of fossil material held at the Queensland Museum. Fossil specimens of Quanbun local fauna, named for a site in Western Australia, were also identified as this species. The origin of the type specimen was not recorded, although based on comparisons to material with a known provenance it is assumed to have excavated at Chinchilla, Queensland. A larger macropod than any modern species, the standing height was estimated to be over two metres.

<i>Congruus</i> Extinct genus of macropod

Congruus is an extinct genus of macropod known from the Late Pleistocene of Australia. There are two species, Congruus kitcheneri, which was originally described as a species of Wallabia, and Congruus congruus. Specimens are known from Mammoth Cave, Western Australia, the Thylacoleo Caves and the Naracoorte caves in South Australia. Potential material is also known from Eastern Australia. The morphology of the skull and limbs suggests that they were semi-arboreal browsers, moving slowly through trees, though they were larger than and not as specialised for climbing as living tree kangaroos. They are thought to be members of the tribe Macropodini, and close relatives of the extinct genus Protemnodon.

References

  1. "Bohra". Fossilworks.
  2. 1 2 3 4 Flannery, T.F.; Szalay, F. (1982). "Bohra paulae, a new giant fossil tree kangaroo (Marsupialia: Macropodidae) from New South Wales, Australia". Australian Mammalogy. 5: 83–94.
  3. Dawson, Lyndall (1985). "Marsupial fossils from Wellington Caves, New South Wales; the historic and scientific significance of the collections in the Australia Museum, Sydney". Records of the Australian Museum. 37 (2): 55–69. doi: 10.3853/J.0067-1975.37.1985.335 .
  4. Dawson, Lyndall (2004). "A new Pliocene tree kangaroo species (Marsupialia, Macropodinae) from the Chinchilla Local Fauna, southeastern Queensland". Alcheringa. 28 (1): 267–273. doi:10.1080/03115510408619284.
  5. 1 2 Prideaux, G.J.; Warburton, N. (2008). "A new fossil tree-kangaroo (Diprotodontia: Macropodidae) from the Nullarbor Plain of South-Central Australia". Journal of Vertebrate Paleontology. 28: 463–478.
  6. 1 2 Prideaux, G.J.; Warburton, N. (2009). "Bohra nullarbora sp. nov., a second tree-kangaroo (Marsupialia: Macropodidae) from the Pleistocene of the Nullarbor Plain, Western Australia". Records of the Western Australian Museum. 25 (2): 165–179.
  7. 1 2 3 Prideaux, Gavin J.; Warburton, Natalie M. (2023-06-07). "A review of the late Cenozoic genus Bohra (Diprotodontia: Macropodidae) and the evolution of tree-kangaroos". Zootaxa. 5299 (1): 1–95. doi:10.11646/zootaxa.5299.1.1. ISSN   1175-5334.
  8. Coulson, Graeme (2010). "13". Macropods: The Biology of Kangaroos, Wallabies, and Rat-kangaroos. CSIRO PUBLISHING. ISBN   9780643101845.