Rutland Formation

{{short description|English geologic formation}}

{{Use dmy dates|date=April 2022}}

{{Infobox rockunit

| name = Rutland Formation

| image =

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| type = Formation

| age = {{fossilrange|Bajocian|Bathonian|Bajocian-Bathonian}}

| period = Bajocian

| prilithology = Mudstone

| otherlithology = Limestone

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| namedby =

| region = England

| country = United Kingdom

| coordinates =

| unitof = Great Oolite Group

| subunits = Stamford Member, Thorncroft Sand Member, Wellingborough Limestone Member

| underlies = Blisworth Limestone, White Limestone Formation

| overlies = Lincolnshire limestone, Northampton Sand Formation

| thickness = Typically about 8 to 12m, up to 15m

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The Rutland Formation is a geologic formation in England. It preserves fossils dating back to the late Bajocian to Bathonian stages in the Jurassic period, about 169 million years ago. It is the lateral equivalent of the Sharp's Hill Formation and the Fuller's Earth Formation. The "Rutland Dinosaur" specimen of Cetiosaurus is known from the formation.{{Cite journal|last1=Upchurch|first1=Paul|last2=Martin|first2=John|date=November 2002|title=The Rutland Cetiosaurus: the anatomy and relationships of a Middle Jurassic British sauropod dinosaur|journal=Palaeontology|language=en|volume=45|issue=6|pages=1049–1074|doi=10.1111/1475-4983.00275|issn=0031-0239|doi-access=free}}