Lower vertebrates from the late Eocene Crow Creek local fauna, St. Francis County, Arkansas

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Abstract
A diverse late Eocene fauna of lower vertebrates is described based on collections made at the Crow Creek Quarry, St. Francis County, Arkansas. Many of the taxa are reported from the late Eocene deposits of Arkansas for the first time. Paleoecological conditions evidenced by the vertebrate remains indicate that deposition occurred under hyposaline conditions adjacent to warm marine waters. This is in agreement with earlier studies of associated molluscan remains and sporomorphs of the region.