Order HEXANCHIFORMES
Introduction
The order Hexanchiformes comprises two families of deepwater sharks, characterised by six or seven gill slits, in contrast to the five in other sharks (Compagno 1984).
General References
Shirai, S. 1992. Identity of extra branchial arches of Hexanchiformes (Pisces, Elasmobranchii). Bulletin of the Faculty of Fisheries, Hokkaido University 43(1): 24-32
History of changes
Note that this list may be incomplete for dates prior to September 2013.
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 16-Apr-2012 | 16-Apr-2012 | MODIFIED | ||
| 12-Feb-2010 | (import) |