Mollusca
E17151
Mollusca is a large and diverse phylum of invertebrate animals that includes snails, clams, squids, and octopuses, typically characterized by soft bodies often protected by a hard shell.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mollusca canonical | 14 |
Statements (60)
| Predicate | Object |
|---|---|
| instanceOf |
phylum
ⓘ
taxonomic rank ⓘ |
| belongsToClade | Lophotrochozoa ⓘ |
| development |
many species have a trochophore larval stage
ⓘ
many species have a veliger larval stage ⓘ |
| ecologicalRole |
important filter feeders in aquatic systems
ⓘ
important herbivores in many ecosystems ⓘ prey for many marine and terrestrial predators ⓘ some species are top predators (cephalopods) ⓘ |
| economicImportance |
source of human food
ⓘ
source of pearls ⓘ source of shells for ornament and trade ⓘ |
| fossilRecord | extends back to the Cambrian period ⓘ |
| habitat |
freshwater environments
ⓘ
marine environments ⓘ terrestrial environments ⓘ |
| hasApproximateSpeciesCount |
hundreds of thousands of fossil species
ⓘ
over 80000 described living species ⓘ |
| hasCharacteristic |
body typically divided into head, visceral mass, and muscular foot
ⓘ
cephalopods have a closed circulatory system ⓘ coelomate body plan ⓘ many forms have a mantle that secretes the shell ⓘ many species exhibit torsion during development (in gastropods) ⓘ many species have a radula for feeding ⓘ many species have complex sensory organs ⓘ many species have gills for respiration ⓘ most species have a complete digestive tract ⓘ most species have a nervous system with paired nerve cords ⓘ most species have an open circulatory system ⓘ often protected by a calcareous shell ⓘ protostome development ⓘ soft-bodied animals ⓘ some species respire through lungs or body surface ⓘ usually unsegmented body ⓘ |
| hasCommonName |
molluscs
ⓘ
mollusks ⓘ |
| includesClass |
Bivalvia
ⓘ
Cephalopoda ⓘ Gastropoda ⓘ Monoplacophora ⓘ Polyplacophora ⓘ Scaphopoda ⓘ |
| includesRepresentative |
chitons
ⓘ
clams ⓘ cuttlefish ⓘ mussels ⓘ octopuses ⓘ oysters ⓘ slugs ⓘ snails ⓘ squids ⓘ |
| isA |
bilaterian animal group
ⓘ
invertebrate group ⓘ |
| isOneOf | largest phyla of animals ⓘ |
| kingdom | Animalia ⓘ |
| notableFeature | cephalopods exhibit advanced nervous systems and complex behavior ⓘ |
| reproduction |
many species have separate sexes
ⓘ
mostly sexual reproduction ⓘ some species are hermaphroditic ⓘ |
| taxonRank | phylum ⓘ |
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Desmoulin’s whorl snail