Published in Palaeontology, in 1986, in volume 29, issue 1, pages 139-154

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

Published in Veliger, in 1978, in volume 21, pages 155-170

Created: 2013-12-03, modified: 2013-12-03

Published in Zoological Science, in 1994, in volume 11, pages 537-545

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