Priapulida
E400810
Priapulida is a small phylum of unsegmented, burrowing marine worms known for their cylindrical, eversible proboscis and occurrence in soft seafloor sediments.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Priapulida canonical | 4 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
phylum
ⓘ
taxon ⓘ |
| bodyPlan | unsegmented ⓘ |
| bodySymmetry | bilateral symmetry ⓘ |
| bodyWall | muscular body wall ⓘ |
| circulatorySystem | lacking discrete circulatory system ⓘ |
| clade | Ecdysozoa ⓘ |
| coelomType | pseudocoelomate ⓘ |
| commonName |
penis worms
ⓘ
priapulid worms ⓘ |
| contains |
Halicryptus spinulosus
ⓘ
Priapulus caudatus ⓘ |
| cuticleType | chitinous cuticle ⓘ |
| development | indirect development ⓘ |
| digestiveSystem | complete gut ⓘ |
| distribution | worldwide in marine sediments ⓘ |
| ecologicalRole |
bioturbator
ⓘ
infaunal predator ⓘ |
| feedingType |
carnivorous
ⓘ
predatory ⓘ |
| fertilization | external fertilization ⓘ |
| firstAppearance |
Cambrian Period
ⓘ
surface form:
Cambrian period
|
| fossilRecord | well represented in Cambrian Lagerstätten ⓘ |
| habitat |
marine environment
ⓘ
soft seafloor sediments ⓘ |
| hasBodyPart |
caudal appendages
ⓘ
eversible proboscis ⓘ introvert ⓘ trunk ⓘ |
| higherClassification | Protostomia ⓘ |
| kingdom | Animalia ⓘ |
| larvalType | loricate larva ⓘ |
| lifestyle | burrowing ⓘ |
| molting | ecdysis ⓘ |
| nervousSystem |
circumpharyngeal nerve ring
ⓘ
ventral nerve cord ⓘ |
| notableFossilLocality |
Burgess Shale fossil lagerstätte
ⓘ
surface form:
Burgess Shale
Chengjiang biota ⓘ |
| proboscisFunction | feeding and burrowing ⓘ |
| proboscisMorphology | cylindrical and eversible ⓘ |
| reproduction | sexual reproduction ⓘ |
| researchUse |
indicator of Cambrian predator-prey systems
ⓘ
model for early ecdysozoan evolution ⓘ |
| respiration | diffusion through body wall ⓘ |
| sizeRange | a few millimeters to about 20 centimeters ⓘ |
| skeletonType | hydrostatic skeleton ⓘ |
| superphylum | Ecdysozoa ⓘ |
| taxonomicRank | phylum ⓘ |
| temperaturePreference | mostly cold and temperate waters ⓘ |
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.