- The
Sipuncula or
Sipunculida (common
names sipunculid worms or
peanut worms) is a
class containing about 162
species of
unsegmented marine annelid worms...
- a sub-group of polychaetes. In addition, the Pogonophora,
Echiura and
Sipuncula,
previously regarded as
separate phyla, are now
regarded as sub-groups...
-
nudus is a
cosmopolitan species of
unsegmented marine worm of the
class Sipuncula, also
known as
peanut worms. As in all
peanut worms, the body of S. nudus...
-
Acoela Nemertodermatida ****ellata (earthworms)
Polychaeta (bristle worms)
Sipuncula (peanut worms)
Arachnida (spiders, scorpions, and kin)
Xiphosura (horseshoe...
- Halanych,
Kenneth M. (2007-01-01). "Annelid
phylogeny and the
status of
Sipuncula and Echiura". BMC
Evolutionary Biology. 7 (1): 57. Bibcode:2007BMCEE....
- 000 per
square meter (5,390 per
square foot).
Together with
Echiura and
Sipuncula, they were once
placed in the
taxon Gephyrea, but
consistent morphological...
- List of
annelid families describes the taxa
relationships in the
phylum Annelida,
which contains more than 17,000
extant species including ragworms, earthworms...
- pseudocoelom.
Other invertebrates include the Nemertea, or
ribbon worms, and the
Sipuncula.
Another phylum is Platyhelminthes, the flatworms.
These were originally...
- Halanych,
Kenneth M (5
April 2007). "Annelid
phylogeny and the
status of
Sipuncula and Echiura". BMC
Evolutionary Biology. 7 (1): 57. Bibcode:2007BMCEE....
-
Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Hyolitha †
Nemertea Phoronida Bryozoa Entoprocta Brachiopoda Mollusca...
