- The
Echiura, or
spoon worms, are a
small group of
marine animals. Once
treated as a
separate phylum, they are now
considered to
belong to Annelida. Annelids...
-
oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora,
Echiura and Sipuncula,
previously regarded as
separate phyla, are now regarded...
- 2014). "Swimming
behavior of the
spoon worm
Urechis unicinctus (Annelida,
Echiura)". Zoology. 117 (3): 216–223. Bibcode:2014Zool..117..216A. doi:10.1016/j...
-
Kenneth M (5
April 2007). "Annelid
phylogeny and the
status of
Sipuncula and
Echiura". BMC
Evolutionary Biology. 7 (1): 57. Bibcode:2007BMCEE...7...57S. doi:10...
- List of
annelid families describes the taxa
relationships in the
phylum Annelida,
which contains more than 17,000
extant species including ragworms, earthworms...
-
Questida (nomen dubium)
Order Scolecidaformia (nomen dubium)
Subclass Echiura Order Bonelliida Family Bonelliidae Family Ikedidae Order Echiurida Family...
-
Patrick J.; Boukal,
David S. (2005). "****
determination in
Bonellia viridis (
Echiura: Bonelliidae): po****tion
dynamics and evolution" (PDF). Oikos. 108 (3):...
- high as 58,000 per
square meter (5,390 per
square foot).
Together with
Echiura and Sipuncula, they were once
placed in the
taxon Gephyrea, but consistent...
-
Infraphylum Operculata Infraphylum Pharyngata Subphylum ****ellata
Subphylum Echiura Subphylum Pogonophora Phylum Nemertina Infrakingdom Chaetognathi Phylum...
- innkeeper" or "**** fish") is a
family of
spoonworms in the
subclass Echiura. The only
genus in the
family is Urechis,
which has four species. The World...
