Subclass (or taxon of roughly equivalent rank) Heterobranchia
In Tasmania, this subclass (or taxon of roughly equivalent rank) includes 266 species in 150 genera in 76 families (-subfamilies) in 34 superfamilies in the following 17 orders (or taxa of roughly equivalent rank):

Lower Heterobranchia (e.g. pyramid-shells) (e.g. figures a-b)

Opisthobranchia – Acteonoidea (acteons)

Opisthobranchia – Aplysiomorpha (sea-hares) (e.g. figure c)

Opisthobranchia – Cephalaspidea (e.g. bubble-shells) (e.g. figures d-e)

Opisthobranchia – Cladobranchia – Aeolidida (sea-slugs) (e.g. figure f)

Opisthobranchia – Cladobranchia – Dendronotida (sea-slugs)

Opisthobranchia – Cladobranchia – Euarminida (sea-slugs)

Opisthobranchia – Cladobranchia – unplaced (sea-slugs) (e.g. figure g)

Opisthobranchia – Euctenidiacea – Doridacea (sea-slugs) (e.g. figures h-i)

Opisthobranchia – Nudipleura – Pleurobranchomorpha (sea-slugs) (e.g. figure j)

Opisthobranchia – Sacoglossa – Oxynoacea (e.g. sea-slugs) (e.g. figure k)

Opisthobranchia – Sacoglossa – Placobranchacea (sea-slugs) (e.g. figure l)

Opisthobranchia – Thecosomata (sea-butterflies) (e.g. figures m-n)

Opisthobranchia – Umbraculida (umbrella-shells) (e.g. figure o)

Pulmonata – Basommatophora (air-breathers) (e.g. figures p-q)

Pulmonata – Eupulmonata (e.g. lung-limpets) (e.g. figures r-s)

Pulmonata – Eupulmonata – Systellommatophora (sea-slugs) (e.g. figure t)





__________________________________________________________________________________________

Information and disclaimer: The web-pages on this web-site are generated from an underlying database. These can be cited as Grove, S.J. (2014). A Guide to the Seashells and other Marine Molluscs of Tasmania web-site and database respectively. Whilst great care is taken to accurately identify specimens featured on this web-site and to allocate all records to the most appropriate taxonomic names available, no guarantee is offered that all identifications are accurate, nor that the taxa to which they have been allocated are currently valid. Commentaries on habitat, distribution and biology are also subject to change as new information comes to light. If you have any enquiries, or any comments that will help improve the content or appearance of these pages, then please follow the links from 'contact' on the left-hand panel.

Last build: Sat Jun 28 17:26:26 Tasmania Standard Time 2014