Rayoso Formation

{{Short description|Geological formation in the Neuquén Province of Argentina}}

{{Infobox rockunit

| name = Rayoso Formation

| image =

| caption =

| type = Geological formation

| period = Aptian

| age = Aptian-Albian,
~{{fossil range|120|113}}

| prilithology = Sandstone

| otherlithology =

| namedfor =

| namedby =

| region = Neuquén Province

| country = Argentina

| coordinates = {{coord|38.4|S|69.9|W|display=inline,title}}

| paleocoordinates = {{coord|40.1|S|37.5|W|display=inline}}

| unitof = Huitrín-Rayoso Group

| subunits = Pichi Neuquén Member

| underlies = Lohan Cura and Carrín Cura Formations

| overlies = La Amarga and Huitrín Formations

| thickness = up to {{convert|604|m|ft|abbr=on}}

| extent = Neuquén Basin

| area =

| map = {{Location map+ | Argentina

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | Argentina

| lat_deg = -38.4

| lon_deg = -69.9

| mark = Green pog.svg

| marksize = 12

}}

}}

| map_caption =

}}

The Rayoso Formation is a geological formation in the Neuquén Province of Argentina whose strata date back to the Aptian-Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., 2004, "Dinosaur distribution (Early Cretaceous, South America).", pp.570-571