 | 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... 25 KB (2,977 words) - 01:55, 9 April 2024 |
 | oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded... 88 KB (8,998 words) - 15:25, 15 April 2024 |
 | 2014). "Swimming behavior of the spoon worm Urechis unicinctus (Annelida, Echiura)". Zoology. 117 (3): 216–223. doi:10.1016/j.zool.2013.12.001. ISSN 0944-2006... 6 KB (615 words) - 00:35, 11 March 2024 |
 | Kenneth M (5 April 2007). "Annelid phylogeny and the status of Sipuncula and Echiura". BMC Evolutionary Biology. 7 (1): 57. doi:10.1186/1471-2148-7-57. PMC 1855331... 15 KB (1,245 words) - 08:42, 19 March 2024 |
 | 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... 24 KB (2,195 words) - 05:07, 8 March 2024 |
| List of annelid families (section Echiura) List of annelid families describes the taxa relationships in the phylum Annelida, which contains more than 17,000 extant species including ragworms, earthworms... 5 KB (328 words) - 19:18, 22 December 2023 |
 | within Sedentaria are: Clitellata, the Sabellida/Spionida clade, Opheliida, Echiura, Cirratuliformia, Terebelliformia, Maldanomorpha and the families Siboglinidae... 4 KB (270 words) - 15:20, 29 March 2024 |
 | Patrick J.; Boukal, David S. (2005). "Sex determination in Bonellia viridis (Echiura: Bonelliidae): population dynamics and evolution" (PDF). Oikos. 108 (3):... 122 KB (12,287 words) - 15:49, 21 April 2024 |
| Examples of Pleistoannelida (clockwise from upper left corner): Sabellida, Echiura, Eunicida, Clitellata, Phyllodocida, Siboglinidae. Scientific classification... 15 KB (1,287 words) - 15:47, 7 April 2024 |
 | Schembri, David S. Boukal (2005). Sex determination in Bonellia viridis (Echiura: Bonelliidae): population dynamics and evolution Archived 2005-04-11 at... 4 KB (490 words) - 14:48, 14 October 2023 |