Published in Zoological Science, in 1989, in volume 6, pages 675-680

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

Published in Paleontological Research, in 2002, in volume 6, pages 85-99

Created: 2013-02-27, modified: 2013-02-27

Published in Paleontological Research, in 1998, in volume 2, pages 30-46

Created: 2013-02-27, modified: 2013-02-27

Published in Zoological Science, in 1991, in volume 8, pages 855-863

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