Published in Palaeontology, in 1985, in volume 28, issue 1, pages 101-109

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 Veliger, in 2008, in volume 50, pages 255-262

Created: 2013-12-24, modified: 2013-12-24

Published in Zoological Science, in 1990, in volume 7, pages 257-263

Created: 2012-09-19, modified: 2012-09-19