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This is an exposure of the Duck Creek Formation in an old quarry NE of the intersection of Old Decator Rd and Hwy 820, Fort Worth, Texas. The basal portion with the Eopachydiscus ammonite zone is obscured here but can be found at the opposite side of the quarry at water level. PhotoID789

This is an exposure of the Duck Creek Formation in an old quarry NE of the intersection of Old Decator Rd and Hwy 820, Fort Worth, Texas. The basal portion with the Eopachydiscus ammonite zone is obscured here but can be found at the opposite side of the quarry at water level. PhotoID789

Photograph: Lance Hall