Exu Formation

{{Infobox rockunit

| name = Exu Formation

| image =

| caption =

| type = Geological formation

| period = Albian

| age = Albian

| prilithology = Sandstone

| otherlithology =

| namedfor =

| namedby =

| region = Piauí

| country = Brazil

| coordinates = {{coord|7.6|S|40.7|W|display=inline,title}}

| paleocoordinates = {{coord|12.6|S|12.1|W|display=inline}}

| unitof = Araripe Group

| subunits =

| underlies = Alluvium

| overlies = Santana Group
 Romualdo Formation

| thickness =

| extent = Araripe Basin

| area =

| map = {{Location map+ | Brazil

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | Brazil

| lat_deg = -7.6

| lon_deg = -40.7

| mark = Green pog.svg

| marksize = 12

}}

}}

| map_caption =

}}

The Exu Formation is an Albian geologic formation in Brazil. Pterosaur fossils of Lophocratia indet. have been recovered from the formation.[https://paleobiodb.org/classic/displayCollResults?collection_no=89973 Chapada do Araripe] at Fossilworks.org