Roboastra [SEP] parent taxon
Roboastra
Roboastra is a genus of sea slugs, polycerid nudibranchs, marine gastropod molluscs in the family Polyceridae. They are carnivorous, feeding on other species of nudibranch.
Species.
Species in the genus "Roboastra" include:
- "Roboastra arika"
- "Roboastra gracilis"
- "Roboastra rubropapulosa"
- "Roboastra tentaculata"
Synonyms:
- "Roboastra gratiosa" is now known as "Tambja gratiosa"
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of