Eginsai Formation

{{Short description|Geological formation in Kazakhstan}}

{{Infobox rockunit

| name = Eginsai Formation

| image =

| caption =

| type = Geological formation

| age = Late Campanian-early Maastrichtian
~{{fossil range|72|68}}

| period = Maastrichtian

| prilithology = Siltstone

| otherlithology = Phosphorite

| namedfor =

| namedby =

| region = Kustanai

| country = {{flag|Kazakhstan}}

| coordinates = {{coord|52.4|N|64.6|E|display=inline,title}}

| paleocoordinates = {{coord|45.5|N|56.1|E|display=inline}}

| unitof =

| subunits =

| underlies =

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| thickness =

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| area =

| map = {{Location map+ | Kazakhstan

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | Kazakhstan

| lat_deg = 52.4

| lon_deg = 64.6

| mark = Lightgreen pog.svg

| marksize = 12

}}

}}

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The Eginsai Formation (Russian: Eginsai Svita) is a geological formation in Kazakhstan whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., 2004, "Dinosaur distribution (Late Cretaceous, Asia).", pp.593-600