Itapecuru Formation

{{Short description|Geological formation in Brazil}}

{{Infobox rockunit

| name = Itapecuru Formation

| image =

| caption =

| type = Geological formation

| period = Cenomanian

| age = Aptian-Cenomanian
~{{fossilrange|120|95}}

| prilithology = Mudstone, sandstone

| otherlithology = Breccia, diamictite

| namedfor = Itapecuru Mirim

| namedby =

| region = Itapecuru Mirim
Maranhão

| country = Brazil

| coordinates = {{coord|3|23|30|S|44|21|30|W|display=inline,title}}

| paleocoordinates = {{coord|8.6|S|15.9|W|display=inline}}

| unitof =

| subunits =

| underlies = Alluvium and Corda Formation

| overlies = Codó, Grajaú and Piauí Formations

| thickness = up to {{convert|2000|m|ft|abbr=on}} in São Luís Basin
{{convert|700|m|ft|abbr=on}} in Parnaíba Basin

| extent = São Luís and Parnaíba Basins

| area =

| map = {{Location map+ | Brazil

| relief = 1

| width = 250

| float = center

| places =

{{Location map~ | Brazil

| lat_deg = -3.391667

| lon_deg = -44.358333

| mark = Green pog.svg

| marksize = 12

}}

}}

| map_caption =

}}

The Itapecuru Formation is a geological formation in Itapecuru Mirim, Maranhão, Brazil.

It was formed during the Aptian to Albian stages of the Early Cretaceous.{{Cite journal|last=Ferreira|first=Neila N.|last2=Ferreira|first2=Elizabete P.|last3=Ramos|first3=Renato R.C.|last4=Carvalho|first4=Ismar S.|date=2016|title=Palynological and sedimentary analysis of the Igarapé Ipiranga and Querru 1 outcrops of the Itapecuru Formation (Lower Cretaceous, Parnaíba Basin), Brazil|journal=Journal of South American Earth Sciences|volume=66|pages=15–31|doi=10.1016/j.jsames.2015.12.005|issn=0895-9811|bibcode=2016JSAES..66...15F}} Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. {{ISBN|0-520-24209-2}}.