A Redescription of Gymnotrachelus (Placodermi: Arthrodira) from the Cleveland Shale (Famennian) of Northern Ohio. U.S.APublished in Kirtlandia, in 1994, in volume 48, pages 3-21Presentation of the David S.Ingalls, Jr. Award for Excellence to Stephen Jay GouldPublished in Kirtlandia, in 1994, in volume 48, pages 23-30
Presentation of the David S.Ingalls, Jr. Award for Excellence to Stephen Jay GouldPublished in Kirtlandia, in 1994, in volume 48, pages 23-30