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  1. Echiurus echiurus - Wikipedia

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    Echiuridae is represented by a single genus, Echiurus Guérin-Méneville, 1831, containing about four species. Echiurids are similar to thalassematids in appearance (Fig. 20.2a ), but can be distinguished from the latter in having two rings of anal chaetae around the posterior end of the trunk (Fig. 20.2a ).
    Echiurans, commonly known as spoon worms, are marine invertebrates that have a sausage-shaped unsegmented body with a highly extensible spoon-like proboscis. Most species live in burrows in soft sediments, although some occur within crevices in hard substrata (Fisher 1946; Stephen and Edmonds 1972; Jumars et al. 2015 ).
    Part of the book series: Diversity and Commonality in Animals ( (DCA)) Echiurans (spoon worms) are marine invertebrates that have a sausage-shaped unsegmented body with an extensible spoon-like proboscis. Most species live inside burrows in soft sediments.
    Recent molecular phylogenetic analyses recover only two groups that contain sexually monomorphic (Echiuridae, Urechidae, and Thalassematidae) and sexually dimorphic species (Bonelliidae and Ikedidae), respectively. The echiuran fauna of Japan comprises 5 families, 19 genera, and 34 species, including 5 thalassematid species newly reported herein.
  3. NDFF Verspreidingsatlas | Echiurus echiurus - Zandworm

  4. Echiurus echiurus (Pallas, 1766) - WoRMS - World Register of …

  5. The Echiura of Japan: Diversity, Classification, Phylogeny, and Their ...

  6. | Nederlands Soortenregister

  7. in nederland echiura

  8. Macrobenthos of the North Sea - Miscellaneous worms: Echiurus …

  9. Macrobenthos of the North Sea - Miscellaneous worms: Echiurus …

  10. Echiurus echiurus (Pallas, 1766) - GBIF