Aitym Formation

{{Short description|Geological formation in Uzbekistan}}

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{{Infobox rockunit

| name = Aitym Formation

| period = Cretaceous

| age = ?Santonian
~{{Fossilrange|86|83}}

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| type = Geological formation

| prilithology =

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| overlies =Bissekty Formation

| thickness = up to

| area = Kyzylkum Desert

| map = {{Location map+ | Uzbekistan

| relief = 1

| 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

| location = Uzbekistan

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| region ={{Flag|Uzbekistan}}

| country = Uzbekistan

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The Aitym Formation is a geological formation in Uzbekistan which possibly dates to the Santonian stage of the Late Cretaceous period.{{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|bibcode=2003CrRes..24..171A }}

The formation has not been precisely dated. However, certain fossils suggest the formation was deposited during the Santonian stage of the Late Cretaceous period.