Published in Biol Bull, in 2005, in volume 208, pages 29-35
Created: 2010-01-07, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/40471606,60,60)
Published in Zoological Science, in 1991, in volume 8, pages 201-205
Created: 2012-09-19, modified: 2012-09-19![](https://www.biodiversitylibrary.org/pagethumb/40355011,60,60)
Published in Paleontological Research, in 1997, in volume 1, pages 15-28
Created: 2013-02-27, modified: 2013-02-27![](https://www.biodiversitylibrary.org/pagethumb/1496109,60,60)
Published in Biol Bull, in 2003, in volume 204, pages 256-269
Created: 2010-01-07, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/40517889,60,60)
Published in Zoological Science, in 1994, in volume 11, pages 45-53
Created: 2012-09-19, modified: 2012-09-19![](https://www.biodiversitylibrary.org/pagethumb/1524179,60,60)
Published in Biol Bull, in 2005, in volume 208, pages 12-19
Created: 2010-01-07, modified: 2011-06-21