title: An eocene hystricognathous rodent from Texas: its significance in interpretations of continental drift.
abstract: The earliest known representative of the fundamentally South American and African hystricognathous rodents has recently been found in the middle or late Eocene of southwestern Texas; this discovery supports the postulate of a northern and independent origin for the two southern groups and increases the evidence against mid-Tertiary trans-Atlantic migration of these rodents at a time when the South Atlantic was narrower than it is at present. The fossil seems to be related to the North American Eocene family Sciuravidae.
authors.forename: A E
authors.initials: AE
authors.lastname: Wood