Paracamelus

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Paracamelus
Temporal range: Late Miocene–Early Pleistocene
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(descendant taxon Camelus survives to present)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Camelidae
Tribe: Camelini
Genus: Paracamelus
Schlosser, 1903 [1]
Type species
Paracamelus gigas
Schlosser, 1903
Species
  • P. aguirreiMorales, 1984
  • P. alexejeviKhavesson, 1950
  • P. alutensisStefanescu, 1895
  • P. gigasSchlosser, 1903
  • P. khersonensisPavlow, 1903
  • P. longipesAubekerova, 1974
  • P. minorLogvynenko, 2001 [2]
  • P. praebactrianusOrlov, 1927
  • P. trofimoviSharapov, 1986

Paracamelus is an extinct genus of camel in the family Camelidae. It originated in North America and crossed the Beringian land bridge into Eurasia during the Late Miocene, about 6 million years ago (Ma). It is the presumed ancestor to living camels of the genus Camelus .

Contents

Taxonomy

Paracamelus was named by Schlosser (1903). Its type is Paracamelus gigas. [3] P. gigas is known from the late Pliocene of China, while P. alutensis is known from the Plio-Pleistocene of Eastern Europe, P. alexejevi is known from Early Pliocene of Ukraine and P. aguirrei is known from the Late Miocene of Spain and is the oldest known camelid from outside North America. [4]

Evolutionary history

The closest relative of Paracamelus is unknown, with authors variously suggesting Megacamelus, Procamelus , and Megatylopus as likely candidates. [5] During the latest Miocene, the genus spread to Eurasia across the Bering land bridge, arriving in the Iberian peninsula just before to the Messinian Salinity Crisis at approximately 6.2 Ma, [6] with the earliest fossils in Africa around the Miocene-Pliocene boundary, approximately 5.3 million years ago, [7] though they may have dispersed into the region somewhat earlier. [8] Paracamelus is the presumed ancestor of modern Camelus. [9] Camelus is distinguished from Paracamelus by the loss of the lower third premolar. [10] Fragmentary remains of camels, referred to as cf. Paracamelus, are known from Ellesmere Island in the Arctic circle in the far north of North America, dating to the Pliocene, around 3.4 million years old, when global temperatures were around 2-3 °C warmer than present, with the local environment being a boreal forest. These camels may have survived in the region into the Early Pleistocene based on poorly dated fossils found in Yukon. The close relationship between these high Arctic and Yukon camels and modern Camelus has been confirmed by analysis of their collagen sequences. [5] [11]

Related Research Articles

<span class="mw-page-title-main">Camel</span> Genus of mammals

A camel is an even-toed ungulate in the genus Camelus that bears distinctive fatty deposits known as "humps" on its back. Camels have long been domesticated and, as livestock, they provide food and textiles. Camels are working animals especially suited to their desert habitat and are a vital means of transport for passengers and cargo. There are three surviving species of camel. The one-humped dromedary makes up 94% of the world's camel population, and the two-humped Bactrian camel makes up 6%. The wild Bactrian camel is a distinct species that is not ancestral to the domestic Bactrian camel, and is now critically endangered, with less than 1,000 individuals.

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

Camelids are members of the biological family Camelidae, the only currently living family in the suborder Tylopoda. The seven extant members of this group are: dromedary camels, Bactrian camels, wild Bactrian camels, llamas, alpacas, vicuñas, and guanacos. Camelids are even-toed ungulates classified in the order Artiodactyla, along with species including whales, pigs, deer, cattle, and antelopes.

<i>Lama</i> (genus) Genus of mammals

Lama is a genus containing the extant South American camelids: the wild guanaco and vicuña and the domesticated llama, alpaca, and chilihueque. Before the Spanish conquest of the Americas, llamas, alpacas, and chilihueques were the only domesticated ungulates of the continent. They were kept not only for their value as beasts of burden, but also for their flesh, hides, and wool.

<i>Camelops</i> Extinct genus of mammals

Camelops is an extinct genus of camel that lived in North and Central America, ranging from Alaska to Honduras, from the middle Pliocene to the end of the Pleistocene. It is much more closely related to living camels than to lamines, making it a true camel of the Camelini tribe. Its name is derived from the Ancient Greek κάμηλος and ὄψ, i.e. "camel-face".

<i>Anancus</i> Genus of proboscideans

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.

<i>Poebrotherium</i> Extinct genus of mammals

Poebrotherium is an extinct genus of camelid, endemic to North America. They lived from the Eocene to Miocene epochs, 46.3—13.6 mya, existing for approximately 32 million years.

<i>Kolpochoerus</i> Extinct genus of mammals

Kolpochoerus is an extinct genus of the pig family Suidae related to the modern-day genera Hylochoerus, Phacochoerus, and Potamochoerus. It is believed that most of them inhabited African forests, as opposed to the bushpig and red river hog that inhabit open brush and savannas. There are currently eleven recognized species.

<i>Asoriculus</i> Extinct genus of red-toothed shrew

Asoriculus is an extinct genus of terrestrial shrews in the subfamily Soricinae and tribe Nectogalini, native to Europe and North Africa.

<i>Prolagus</i> Extinct genus of mammals

Prolagus is an extinct genus of lagomorph. Over 20 species have been named, and the genus was abundant and widespread in Europe during the Neogene. However, by the end of the Middle Pleistocene, it was confined to a single species, the Sardinian pika, on the Corsica, Sardinia, and surrounding islands, where it survived into historical times. In North Africa and Western Asia, the genus is known from the Miocene and Pliocene. The scientific name may mean "before hares" or "primitive hares". Its taxonomy is disputed, with it either being considered a member of the family Ochotonidae, which includes living pikas, or the only member of the family Prolagidae.

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<i>Hemiauchenia</i> Extinct genus of mammals

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<span class="mw-page-title-main">Camelini</span> Tribe of mammals

Camelini is a tribe of camelids including all camelids more closely related to modern camels (Camelus) than to Lamini, from which camelines split Approximately 17 million years ago. The tribe originated in North America, with the genus Paracamelus migrating over the Bering Land Bridge into Eurasia during the Late Miocene, about 6 million years ago, becoming ancestral to Camelus. The last member of Camelini in North America was Camelops, which became extinct as part of the Quaternary extinction event at the end of the Late Pleistocene, around 12,000 years ago.

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<i>Palaeolama</i> Extinct genus of mammals

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<span class="mw-page-title-main">Shungura Formation</span> Stratigraphic formation in the Omo river basin in Ethiopia

The Shungura Formation is a stratigraphic formation located in the Omo river basin in Ethiopia. It dates to the Late Pliocene to Early Pleistocene. Oldowan tools have been found in the formation, suggesting early use of stone tools by hominins. Among many others, fossils of Panthera were found in Member G of the formation.

<span class="mw-page-title-main">Turkana Basin</span> Large endorheic basin mainly in Kenya and Ethiopia

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The Manix Formation is a geologic formation in California. This formation dates to the Pleistocene Epoch and is known to preserve fossils. Specimens of the extinct camelid, Camelops have been uncovered from the Rancholabrean units of this formation of both the species C. hesternus and C. minidokae.

Camelus thomasi is an extinct species of camel from the Early-Mid Pleistocene of North Africa. It is known primarily from Tighennif (Ternifine) in Algeria. Fossils from northern Sudan and Israel dated to the Late Pleistocene have been included under C. thomasi, but they are now considered to belong to different species, making C. thomasi a strictly Northwest African species.

features. Some studies have linked it as a possible ancestor to the dromedary, while others suggest it may be more closely related to the Bactrian camel of central Asia. However, a 2018 study revealed such assertions to be lacking any scientific basis, and C. thomasi appears to not be closely related to any living camel.

References

  1. Schlosser, Max (1903). "Die fossilen Säugethiere Chinas nebst einer Odontographie der recenten Antilopen". Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften. 22 (1): 95–97; Pl. 9, Fig. 14, 26{{cite journal}}: External link in |postscript= (help)CS1 maint: postscript (link)
  2. Logvynenko, V. M. (2001). "Paracamels minor (Camelidae, Tylopoda) — A New Camelid Species from the Middle Pliocene of Ukraine" (PDF). Vestnik Zoologii. 35 (1): 39–42.
  3. R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698
  4. Caballero, Óscar; Montoya, Plini; Crespo, Vicente D.; Morales, Jorge; Abella, Juan (September 2021). "The autopodial skeleton of Paracamelus aguirrei (Morales 1984) (Tylopoda, Mammalia) from the late Miocene site of Venta del Moro (Valencia, Spain)". Journal of Iberian Geology. 47 (3): 483–500. doi:10.1007/s41513-020-00144-x. ISSN   1698-6180.
  5. 1 2 Rybczynski, Natalia; Gosse, John C.; Richard Harington, C.; Wogelius, Roy A.; Hidy, Alan J.; Buckley, Mike (2013-03-05). "Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution". Nature Communications. 4 (1). doi:10.1038/ncomms2516. ISSN   2041-1723. PMC   3615376 . PMID   23462993.
  6. Colombero, Simone; Bonelli, Edmondo; Pavia, Marco; Repetto, Giovanni; Carnevale, Giorgio (2016). "Paracamelus (Mammalia, Camelidae) remains from the late Messinian of Italy: insights into the last camels of western Europe". Historical Biology. 29 (4): 509–518. doi:10.1080/08912963.2016.1206539. ISSN   0891-2963. S2CID   132350588.
  7. Likius, Andossa; Brunet, Michel; Geraads, Denis; Vignaud, Patrick (2003). "The oldest Camelidae (Mammalia, Artiodactyla) of Africa : new finds from the Mio-Pliocene boundary, Chad". Bulletin de la Société Géologique de France. 174 (2): 187–193. doi:10.2113/174.2.187. ISSN   0037-9409.
  8. Rowan, John; Martini, Pietro; Likius, Andossa; Merceron, Gildas; Boisserie, Jean-Renaud (2018-01-24). "New Pliocene remains of Camelus grattardi (Mammalia, Camelidae) from the Shungura Formation, Lower Omo Valley, Ethiopia, and the evolution of African camels". Historical Biology: 1–12. doi:10.1080/08912963.2017.1423485. ISSN   0891-2963.
  9. Zazula, Grant D.; Macphee, Ross D. E.; Hall, Elizabeth; Hewitson, Susan (2016-10-18). "Osteological Assessment of Pleistocene Camelops hesternus (Camelidae: Camelinae: Camelini) from Alaska and Yukon". American Museum Novitates. 3866 (3866): 1–45. doi:10.1206/3866.1. ISSN   0003-0082.
  10. Geraads, Denis; Barr, W. Andrew; Reed, Denne; Laurin, Michel; Alemseged, Zeresenay (June 2021). "New Remains of Camelus grattardi (Mammalia, Camelidae) from the Plio-Pleistocene of Ethiopia and the Phylogeny of the Genus". Journal of Mammalian Evolution. 28 (2): 359–370. doi:10.1007/s10914-019-09489-2. ISSN   1064-7554.
  11. Zazula, Grant D.; MacPhee, Ross D.E.; Southon, John; Nalawade-Chavan, Shweta; Reyes, Alberto V.; Hewitson, Susan; Hall, Elizabeth (September 2017). "A case of early Wisconsinan "over-chill": New radiocarbon evidence for early extirpation of western camel (Camelops hesternus) in eastern Beringia". Quaternary Science Reviews. 171: 48–57. doi:10.1016/j.quascirev.2017.06.031.

Further reading