Dendronotus is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of sea slugs, nudibranch

Nudibranch

A nudibranch is a member of what is now a taxonomic clade, and what was previously a suborder, of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms...

s, marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod molluscs in the superfamily Tritonioidea

Tritonioidea

Tritonioidea is a superfamily of small sea slugs, nudibranchs. These are marine gastropod mollusks.Tritonioidea is the only superfamily in the clade Dendronotida....

.

This genus is within the clade Cladobranchia

Cladobranchia

The Cladobranchia are a taxonomic clade of nudibranch sea snails or slugs, marine gastropod molluscs in the clade Dexiarchia.-Taxonomy:**Family Charcotiidae**Family Dironidae**Family Dotidae**Family Embletoniidae**Family Goniaeolididae**Family Heroidae...

 (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

).

Description

Dendronotus has an elongated, broad body, with 4 to 8 pairs of branched cerata on the notum. Animals in this genus have an obvious oral veil with 2 to 5 extensions. These extensions may be branched. Smaller unbranched extensions are found around the mouth. The rhinophore

Rhinophore

A rhinophore is one of a pair of club-shaped structures which are the most prominent part of the external head anatomy of a group of sea slugs, marine gastropod opisthobranch mollusks in the order Nudibranchia, the nudibranchs, specifically the dorid nudibranchs.- Etymology :The name relates to the...

s are surrounded by a sheath and the sheath itself has branched extensions. A large extension is found on the side at the base of each rhinophore. The anal opening occurs between the first and second set of dorsal cerata on the right side of the body.

Species

• Dendronotus albopunctatus Robilliard, 1972
• Dendronotus albus
  Dendronotus albus
  Dendronotus albus is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Dendronotidae.- Distribution :This animal can be found along the west coast of North America from Alaska to Baja California....
  
  MacFarland, 1966
• Dendronotus dalli Bergh, 1879
• Dendronotus diversicolor Robilliard, 1972
• Dendronotus frondosus
  Dendronotus frondosus
  Dendronotus frondosus is a species of dendronotid nudibranch. It is a marine gastropod mollusc in the family Dendronotidae.- External links :* http://www.seaslugforum.net/dendfron.htm...
  
  (Ascanius, 1774) (synonyms: D. arborescens, D. reynoldsi)
• Dendronotus iris
  Dendronotus iris
  Dendronotus iris is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Dendronotidae.- Distribution :This animal can be found along the west coast of North America from Alaska to Baja California....
  
  J.G. Cooper, 1863 (synonym: D. giganteus)
• Dendronotus robustus Verrill, 1870 (synomym: D. velifer)
• Dendronotus rufus O'Donoghue, 1921
• Dendronotus subramosus MacFarland, 1966