Bird Spring Formation

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{{Short description|Geologic formation in Nevada, United States}}

{{Infobox rockunit

| name = Bird Spring Formation

| image = Chaetetid Bird Spring closer Upper Carboniferous Nevada.jpg

| caption = Fossil from the Bird Spring Formation

| type = Formation

| age = Carboniferous-Permian

| period = Permian

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| region = Nevada

| country = United States

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The Bird Spring Formation is a geologic formation in Nevada. It preserves fossils dating back to the Carboniferous and Permian periods.