Abstract
Two species of terebratulide brachiopods are described from the upper part of the Bateque Formation (middle Eocene) on the Pacific coast of Baja California Sur, Mexico,Terebratulinacf.Terebratulina louisianaeStenzel, 1940, andTerebratalia batequian. sp.Terebratalia batequian. sp. is the earliest confirmed record of the genusTerebrataliaBeecher, 1893, which has been an important component of Pacific brachiopod faunas through to the present day. The occurrence ofTerebratulinacf.Terebratulina louisianaeStenzel is one of the earliest records of the genus from the west coast of North America. These brachiopods, like other elements of the Bateque invertebrate fauna, may record Eocene migration from the Atlantic to Pacific Ocean via the Central American seaway.
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