- ru.us.edu.vn en/Gnathostomulid"Die Gnathostomulida, eine rätselhafte Wurmgruppe aus dem Meeressand". ... "Indication of an Anal Pore in Gnathostomulida".
- ebrary.net 200771/health/gnathostomulida8.1C) (Sterrer, 1974). For more details on classification of gnathostomulids, Jenner (2014) may be consulted. Gnathostomulida 49. FIGURE 8.1.
- animals.jrank.org pages/1579/Gnathostomulids-…Animal Life ResourceJellyfish, Sponges, and Other Simple AnimalsGnathostomulids: Gnathostomulida - Physical Characteristics, Red Haplognathia...
- researchgate.net publication/271443833_…Originally regarded as primitive animals with affinities to flatworms, the phylogenetic position of Gnathostomulida has been debated.
- earthlife.net phylum-gnathostomulida-sand-worms-…Characteristics of Gnathostomulida: Bilaterally symmetrical, and vermiform. Body has more than two cell layers, tissues and organs.
- http://tolweb.org Ratugnathia1998. Gnathostomulida - an enigmatic metazoan phylum from both morphological and molecular perspectives. Molecular Phylogenetics and Evolution 9:72-79.
- kids.kiddle.co GnathostomulidaKids robot.svg In Spanish: Gnathostomulida para niños.
- http://tolweb.science.oregonstate.edu Gnathostomulida1998. Gnathostomulida - an enigmatic metazoan phylum from both morphological and molecular perspectives. Molecular Phylogenetics and Evolution 9:72-79.
- wiki2.org en/Gnathostomulid"Die Gnathostomulida, eine rätselhafte Wurmgruppe aus dem Meeressand". ... "Indication of an Anal Pore in Gnathostomulida". Zoologica Scripta.
Gnathostomulida
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