Published in Palaeontology, in 1970, in volume 13, issue 4, pages 588-605

Created: 2016-04-23, modified: 2016-04-23

Published in Palaeontology, in 1988, in volume 31, issue 2, pages 419-444

Created: 2016-04-23, modified: 2016-04-23

Published in Palaeontology, in 1980, in volume 23, issue 3, pages 689-698

Created: 2016-04-23, modified: 2016-04-23

Published in American Malacological Bulletin, in 1996, in volume 12, issue 1-2, pages 59-65

Created: 2014-09-21, modified: 2014-09-21