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| underlies = | underlies =
| overlies =] | overlies =]
| thickness = up to <!-- {{Convert||ft|m|-1}} --> | thickness = up to <!-- ] -->
| area = | area = ]
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| width = 250
| float = center
| places =
{{Location map~ | Uzbekistan
| lat_deg = 42.07
| lon_deg = 62.39
| mark = Lightgreen pog.svg
| marksize = 10}}
| map_caption = Location of the Aitym Formation
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| country = | country = Uzbekistan
| extent = <!-- {{Convert||mi|km}}--> | extent = <!-- {{Convert||mi|km}}-->
<!--Type section---> <!--Type section--->
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| year_ts = <!--Year of definition--> | year_ts = <!--Year of definition-->
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The '''Aitym formation''' is a ] in ] which possibly dates to the ] stage of the ] period.<ref name=":0">{{Cite journal |last=Averianov |first=A |date=2003 |title=Mammals from the Upper Cretaceous Aitym Formation, Kyzylkum Desert, Uzbekistan |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667103000375 |journal=Cretaceous Research |language=en |volume=24 |issue=2 |pages=171–191 |doi=10.1016/S0195-6671(03)00037-5}}</ref> The '''Aitym formation''' is a ] in ] which possibly dates to the ] stage of the ] period.<ref name=":0">{{Cite journal |last=Averianov |first=A |date=2003 |title=Mammals from the Upper Cretaceous Aitym Formation, Kyzylkum Desert, Uzbekistan |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667103000375 |journal=Cretaceous Research |language=en |volume=24 |issue=2 |pages=171–191 |doi=10.1016/S0195-6671(03)00037-5}}</ref>
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! Genus !! Species !! Location !! Notes!! Images ! Genus !! Species !! Location !! Notes!! Images
|- |-
| ] | '']''
| P. kyzylkumense<ref name=":0" /> | ''P. kyzylkumense''<ref name=":0" />


| |
|A ] |A ]]
]
| |
|} |}
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! Genus !! Species !! Location !! Notes!! Images ! Genus !! Species !! Location !! Notes!! Images
|- |-
|] |'']''
|E. asiaticum<ref>{{Cite journal |last=Skutschas |first=Pavel P. |last2=Saburov |first2=Pavel G. |last3=Boitsova |first3=Elizaveta A. |last4=Kolchanov |first4=Veniamin V. |date=2019 |title=Ontogenetic changes in long-bone histology of the cryptobranchid Eoscapherpeton asiaticum (Amphibia: Caudata) from the Late Cretaceous of Uzbekistan |url=http://cr-palevol.fr/18/30 |journal=Comptes Rendus Palevol |language=en |volume=18 |issue=3 |pages=306–316 |doi=10.1016/j.crpv.2019.02.002}}</ref> |''E. asiaticum''<ref>{{Cite journal |last=Skutschas |first=Pavel P. |last2=Saburov |first2=Pavel G. |last3=Boitsova |first3=Elizaveta A. |last4=Kolchanov |first4=Veniamin V. |date=2019 |title=Ontogenetic changes in long-bone histology of the cryptobranchid Eoscapherpeton asiaticum (Amphibia: Caudata) from the Late Cretaceous of Uzbekistan |url=http://cr-palevol.fr/18/30 |journal=Comptes Rendus Palevol |language=en |volume=18 |issue=3 |pages=306–316 |doi=10.1016/j.crpv.2019.02.002}}</ref>
| |
|A Genus of Large ] |A Genus of Large ]
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==References== ==References==
{{reflist}} {{reflist}}

]

Latest revision as of 07:06, 27 December 2024

Geological formation in Uzbekistan
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Aitym formation
Stratigraphic range: ?Santonian
~86–83 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
TypeGeological formation
OverliesBissekty Formation
AreaKyzylkum Desert
Thicknessup to
Location
Aitym Formation is located in UzbekistanAitym FormationAitym Formation (Uzbekistan)

The Aitym formation is a Geological formation in Uzbekistan which possibly dates to the Santonian stage of the Late Cretaceous period.

The formation has not been precisely dated, however, certain fossils suggest the formation as being deposited during the Santonian stage of the Late Cretaceous period. However, more study needs to be done in order to precisely date the formation.

Fossil Content

A diverse fauna has been unearthed from the Aitym formation including Oysters, Ammonites and many marine vertebrates, including a diverse and abundant assemblage of Chondrichthyans ( cartilagenous fish) and a rarer assemblage of Osteichthyans ( bony fish), as well as rather infrequent finds of Plesiosaurs, and possible finds of Sea Turtles. Terrestrial vertebrate remains are extremely rare in the formation. A few bones of Salamanders, Lizards, Crocodiles, possibly terrestrial Turtle remains, Dinosaurs (including Birds), and Mammals have been found in the Formation.

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
Mammals of the Aitym Formation
Genus Species Location Notes Images
Uzbekbaatar U. wardi A cimolodontan

multituberculate

Shalbaatar cf. S. sp. A spalacotheriid symmetrodont
Deltatherus Cf. D. sp. A deltatheroidan Reclassified as Deltatherus as the two genera have been synonymized
Daulestes aff. D. sp A asioryctithere
Kulbeckia Kulbeckia sp. cf. K. kulbecke A possible zalambdalestid
aff. Kulbeckia sp.
Paranyctoides Paranyctoides sp. cf. P. aralensis A Possible lipotyphlan
Paranyctoides sp.
Eoungulatum E. sp. cf. E. kudukensis Zhelestid ungulatomorphs
Parazhelestes P. sp. cf. P. robustus
P. sp. aff. P. minor
Aspanlestes cf. A. sp.
Molluscs of the Aitym Formation
Genus Species Location Notes Images
Placenticeras P. kyzylkumense A PlacenticeratiAmmonite
Amphibians of the Aitym Formation
Genus Species Location Notes Images
Eoscapherpeton E. asiaticum A Genus of Large Giant Salamander

References

  1. ^ Averianov, A (2003). "Mammals from the Upper Cretaceous Aitym Formation, Kyzylkum Desert, Uzbekistan". Cretaceous Research. 24 (2): 171–191. doi:10.1016/S0195-6671(03)00037-5.
  2. Skutschas, Pavel P.; Saburov, Pavel G.; Boitsova, Elizaveta A.; Kolchanov, Veniamin V. (2019). "Ontogenetic changes in long-bone histology of the cryptobranchid Eoscapherpeton asiaticum (Amphibia: Caudata) from the Late Cretaceous of Uzbekistan". Comptes Rendus Palevol. 18 (3): 306–316. doi:10.1016/j.crpv.2019.02.002.
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