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...

Halanych, Kenneth M (5 April 2007). "Annelid phylogeny and the status of Sipuncula and Echiura". BMC Evolutionary Biology. 7 (1): 57. Bibcode:2007BMCEE....

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 Clitellata (earthworms) Polychaeta (bristle worms) Sipuncula (peanut worms) Arachnida (spiders, scorpions, and kin) Xiphosura (horseshoe...

List of annelid families describes the taxa relationships in the phylum Annelida, which contains more than 17,000 extant species including ragworms, earthworms...

Rafinesque used the feminine form Sipuncula to distinguish the family including S. nudus; this was later elevated to the Sipuncula class, the family being renamed...

pseudocoelom. Other invertebrates include the Nemertea or ribbon worms, and the Sipuncula. Another phylum is Platyhelminthes, the flatworms. These were originally...

Lumbricus. In the mid-nineteenth century Echiura was placed, alongside Sipuncula and Priapulida, in the now defunct class Gephyrea (meaning a "bridge")...

Halanych, Kenneth M. (2007-01-01). "Annelid phylogeny and the status of Sipuncula and Echiura". BMC Evolutionary Biology. 7 (1): 57. Bibcode:2007BMCEE....

plerocercoid Annelida nectochaete, polytroch Nematoda Dauer larva, microfilaria Sipuncula pelagosphera larva Ectoprocta cyphonautes, vesiculariform larvae Nematomorpha...

cells and epidermal gland cells are also found in Ctenophora, Echiura, Sipuncula, Annelida, Mollusca and other taxa. The rhabdites of nemertea have a different...

Nationalnyckeln till Sveriges flora och fauna. Stjärnmaskar – slemmaskar. Sipuncula – Nemertea. Artdatabanken, SLU, Uppsala, ISBN 978-91-88506-72-6 "Discovery...

Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Hyolitha † Nemertea Phoronida Bryozoa Entoprocta Brachiopoda Mollusca...

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...

Ctenophora; sea worms including the phyla Platyhelminthes, Nemertea, Annelida, Sipuncula, Echiura, Chaetognatha, and Phoronida; Mollusca including shellfish, squid...

Brachiopoda             Subphylum Phoronida         Superphylum Sipuncula           Phylum Sipuncula         Superphylum Vermizoa           Phylum Annelida...

Antillesoma is a genus of peanut worms (Phylum Sipuncula). The genus belongs to the family Phascolosomatidae. Antillesoma was described in 1973 by Stephen...

of the two genera that constitute the family Phascolionidae of Phylum Sipuncula, described by Koren and Danielssen established in 1873 as the type species...

unequal cleavage (see below). This group includes annelids, molluscs, and sipuncula. Spiral cleavage can vary between species, but generally the first two...

Loricifera) coelomates (or eucoelomates, phyla Nemertea, Priapula, Annelida, Sipuncula, Echiura, Onychophora, Tardigrada, Arthropoda, Mollusca, Phoronida, Ectoprocta...

Phylum Sipuncula. Systematic Zoology 34(2):162-173. Cutler, Edward B. & Cutler, Norma J (1989): A revision of the genus Aspidosiphon (Sipuncula: Aspidosiphonidaea)...

single sucker at the back. Like most annelids, with a few exceptions like Sipuncula, Echiura and Diurodrilus, the leech is a segmented animal, but unlike...

Chlorocruorin: 4 families of marine polychaetes Arthropoda and Mollusca Sipuncula, priapulida, some brachiopoda, and a single annelid genus Oxygenated Color...

McHugh, D.; Halanych, K. M. (2007). "Annelid phylogeny and the status of Sipuncula and Echiura". BMC Evolutionary Biology. 7: 57. doi:10.1186/1471-2148-7-57...

Thysanocardia procera is a marine invertebrate belonging to the phylum Sipuncula, the peanut worms. It is a cylindrical, unsegmented worm with a crown...

Thecanephria Phylum Vestimentifera Order Basibranchia Order Riftiidae Phylum Sipuncula Order Aspidosiphoniformes Order Golfingiaformes Order Phascolosomatiformes...

Aculiferans and the Coelomate origin of mollusks as the sister taxon of Sipuncula". The Biological Bulletin. 184 (1): 57–78. doi:10.2307/1542380. JSTOR 1542380...

Nephasoma rimicola is a marine invertebrate belonging to the phylum Sipuncula, the peanut worms. This worm occurs in the northeastern Atlantic Ocean....

analysis of higher taxa in the Phylum Sipuncula. Systematic Zoology 34(2):162-173. Cutler, Edward B. (1994): The Sipuncula: their systematic, biology and evolution...