| Dilemma inexpectatum | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Heterodonta |
| Order: | Anomalodesmata |
| Family: | Poromyidae |
| Genus: | Dilemma |
| Species: | D. inexpectatum |
| Binomial name | |
| Dilemma inexpectatum (Crozier, 1966) | |
| Synonyms [1] | |
Corculum inexpectatumCrozier, 1966 | |
Dilemma inexpectatum [1] is a minute species of deepwater [2] cockle, a marine bivalve mollusc in the family Cardiidae. [1]
The gastropods, commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.
Poromyidae is a family of saltwater clams, marine bivalve molluscs in the order Anomalodesmata. The genus Dilemma, described in 2008, is remarkable for being a predator of copepods, which is very unusual for a sessile mollusc.
Corculum is a genus of small saltwater clams, marine bivalve molluscs in the family Cardiidae, the cockles. They maintain Symbiodinium dinoflagellates as symbionts.
Janthina janthina, common name the violet sea-snail or common violet snail, is a species of holoplanktonic sea snail, a marine gastropod mollusk in the family Epitoniidae, the violet snails or purple storm snails.
Dilemma is a genus of marine bivalves of the family Poromyidae. The genus is remarkable for encompassing predators of isopods and ostracods, unusual for sessile molluscs. One species is known from the western Atlantic Ocean and three from across the Pacific. Specimens have been found at depths between 229–961 m (751–3,153 ft). The name of the genus refers to the dilemma that the author of the new genus faced while diagnosing it.
Euthyneura is a taxonomic infraclass of snails and slugs, which includes species from freshwater, marine, aquatic and terrestrial gastropod mollusks in the clade Heterobranchia.
Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes most land snails and slugs.
Oxynooidea is a superfamily of small sea snails, bubble snails and bivalved gastropods, marine gastropod mollusks within the superorder Sacoglossa.
Philiopsis is a genus of often colorful, medium-sized sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea.
Seila is a genus of minute sea snails, marine gastropod molluscs or micromolluscs in the family Cerithiopsidae.
Mopaliidae is a family of marine molluscs in the class Polyplacophora.
Limapontia capitata is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Limapontiidae.
Rangia is a genus of bivalve molluscs or clams in the family Mactridae.
Rissopsetia is a genus of sea snails, marine gastropod molluscs in the family Pyramidellidae.
Codakia is a genus of saltwater clams, marine bivalve molluscs in the family Lucinidae.
Capellinia doriae is a species of sea slug or nudibranch, a marine gastropod mollusc in the family Eubranchidae.
Solecurtus is a genus of saltwater clam, a marine bivalve molluscs in the family Solecurtidae.
After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily：
Richard E. Young is a teuthologist. He is an Emeritus Professor of Oceanography at the University of Hawaii's School of Ocean and Earth Science and Technology.
Acila is a genus of marine bivalves in the family Nuculidae. Acila fossils have been found dating back to 113.0 Ma ago.
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