Comments: Formerly included in the genus Lepisosteus. Placed by Wiley (1976) in genus Atractosteus, along with L. tristoechus, L. tropicus, and a number of fossil species. Nelson (1984) regarded Atractosteus as a subgenus of Lepisosteus. The 1991 AFS checklist (Robins et al. 1991) also included this species in the genus Lepisosteus. Page and Burr (1991), Etnier and Starnes (1993), and Nelson (1994) followed Wiley's use of the generic name Atractosteus.