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Juxia






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From Wikipedia, the free encyclopedia
 


Juxia
Temporal range: Lutetian–Rupelian[1][2]

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Mounted skeleton, Inner Mongolia Museum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Suborder: Ceratomorpha
Superfamily: Rhinocerotoidea
Family: Paraceratheriidae
Genus: Juxia
Chow & Chiu, 1964
Type species
Juxia sharamurenensis

Chow & Chiu, 1964

Species
  • J. sharamurenensis Chow & Chiu, 1964
  • J. borissiaki (Beliajeva, 1959)
  • J. shoui Qi & Zhou, 1989
Synonyms[3][4]
  • Imequinincisoria Wang, 1976

Species synonyms

  • Juxia sharamurenensis:
  • Juxia sharamurenense Chow & Chiu, 1964
  • Forstercooperia sharamurenense Radinsky, 1967
  • Juxia sharamurenensis Chiu & Wang, 2007
  • Juxia borissiaki:
  • Eotrigonias borissiaki Beliajeva, 1959
  • Forstercooperia ergiliinensis Gabuniya & Dashzeveg, 1974
  • Imequinincisoria mazhuangensis Wang, 1976
  • Imequinincisoria micrasis Wang, 1976

Juxia, ‘joo-she-a’, (from Chinese: 巨犀; pinyin: Jùxī; lit. 'gigantic rhinoceros') is an extinct genusofparaceratheriid, a group of herbivorous mammals that are related to the modern rhinoceros. The type species is Juxia sharamurenensis, named by Zhou Mingzhen and Qiu Zhanxiang [zh] in 1964. Juxia was around the size of a horse. It lived in Asia during the upper Eocene.[1]

Skull and neck of a mounted specimen of Juxia sharamurenense, Paleozoological Museum of China

As an early indricothere, Juxia was a relatively small compared to its later relatives, with a body mass estimated at 749–888 kilograms (1,651–1,958 lb) or 1,482 kilograms (3,267 lb),[5] held by elongated long legs and small skull firmly attached to a relatively long neck. Based on its triangular like teeth and sharp protruding incisors, Juxia was probably a strict browser, feeding on ferns and leaves on branches where most herbivorous mammals could not reach. In terms of habitat, Juxia lived in densely lush and tropical forests of what is now China. Though a few skeletons have been found, it is unclear whether this early indricothere was permanently solitary or lived in small social groups, possibly harems. Based on its morphology, Juxia's long legs probably enabled it to run relatively fast for a limited duration. This was probably a defense mechanism against early mammalian predators.[6]

References[edit]

  1. ^ a b Chow, M.-C.; Chiu, C.-S. (1964). "An Eocene giant rhinoceros". Vertebrata PalAsiatica (in Chinese (China) and English). 8 (3): 264–267.
  • ^ Qi, T.; Zhou, M. (1989). "A new species of Juxia (Perissodactyla), Nei Mongol" (PDF). Vertebrata PalAsiatica (in Chinese (China) and English). 27 (3): 205–208.
  • ^ Lucas, S.G.; Sobus, J.C. (1989). "The Systematics of Indricotheres". In Prothero, David R.; Schoch, Robert M. (eds.). The Evolution of Perissodactyls. Oxford University Press. pp. 358–378. ISBN 978-0-19-506039-3. OCLC 19268080.
  • ^ Qiu, Z.; Wang, B. (2007). "Juxia Chow et Chiu ( = Zhou et Qiu), 1964". Paracerathere Fossils of China (in Chinese (China) and English). Vol. 29. Beijing: Science Press. pp. 15–100. ISBN 978-7-03-019127-4. {{cite book}}: |journal= ignored (help)
  • ^ Li, Shijie; Jiangzuo, Qigao; Deng, Tao (2022-07-06). "Body mass of the giant rhinos (Paraceratheriinae, Mammalia) and its tendency in evolution". Historical Biology: 1–12. doi:10.1080/08912963.2022.2095908. ISSN 0891-2963.
  • ^ Prothero, D. (2013). Rhinoceros Giants: The Palaeobiology of Indricotheres. Indiana: Indiana University Press. ISBN 978-0-253-00819-0.

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  • Retrieved from "https://en.wikipedia.org/w/index.php?title=Juxia&oldid=1233066195"

    Categories: 
    Paraceratheriidae
    Eocene rhinoceroses
    Eocene mammals of Asia
    Hyracodonts
    Fossil taxa described in 1964
    Prehistoric Perissodactyla stubs
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    This page was last edited on 7 July 2024, at 02:44 (UTC).

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