When we minimize LBA we find consistent support for a position of both acoelomorphs and Xenoturbella within the deuterostomes. The most likely phylogeny. Xenoturbellida and Acoelomorpha are marine worms with contentious ancestry. Both were originally associated with the flatworms. 筑波大学の研究情報ポータル、COmmunity of Tsukuba Researchers、略して COTREにようこそ!このサイトでは、筑波大学に所属する研究者の情報、筑波大学が 誇る高.

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Notify me of new comments via email. Fill in your details below or click an icon to log in: To Be or Not to Be a Flatworm: Showing of 50 references.

This site uses cookies. Really interesting post; flatworms are really remarkable. Phylip – phylogeny inference package version 3. Assessing the root of bilaterian animals with scalable phylogenomic methods.

Mazza-CurllJosien C. Several phylogenetic studies indicate that Acoelomorpha is indeed a basal group of bilateral animals. Peterson and Deutfrostomes J. Now think with me. The Xenacoelomorpha is the sister group of the Ambulacraria hemichordates and echinoderms.

Now if you flqtworms of them as primitive groups, the only thing necessary is to analyze protostomes as having lost a microRNA sequence. If you consider Xenoturbellida and Acoelomorpha inside Deuterostomia, you have to assume that they passed through a huge simplification, and you maintain the radial nerve cords unexplained. Keep up the food work!


Xenoturbella is a deuterostome that eats molluscs. Xenoturbella is an acoelomorph. To Be or Not to Be a Flatworm: Castresana 1 Estimated H-index: The first multi-gene phylogeny of the Macrostomorpha sheds light on the evolution of sexual and asexual reproduction in basal Platyhelminthes.

Picture by myself, Piter K. Gerhard Schlosser 26 Estimated H-index: Leave a Reply Cancel reply Enter your comment here Photograph by Vincent Maran. Topics Discussed in This Paper. Telford 1 Estimated H-index: Acoelomorph flatworms are flatwormms related to Xenoturbella. There are two groups of acoelomorphs: Assessing the root of bilaterian animals with scalable phylogenomic methods Andreas Hejnol University of HawaiiMatthias Obst University of Gothenburg.

Acoelomorph flatworms are deuterostomes related to Xenoturbella – Semantic Scholar

Characterization of the bHLH family of transcriptional regulators in the acoel S. Erlated 14 Estimated H-index: Xenoturbella is an acoelomorph! Their proximity would be explained by several shared features, mainly the simple nervous system, the lack of a stomatogastric mouth-gut system, the structure of the epidermal cilia and the unusual fact ho, in both groups, epidermal degenerated cells as resorbed in the gastrodermis.

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From This Paper Figures, tables, and topics from this paper. Platyhelminthes ou apenas semelhantes a Platyhelminthes? The most likely phylogeny links Xenoturbella and Deuterostoes in a clade we call Xenacoelomorpha.

Assessing the rootof bilateriananimals with scalablephylogenomic methods. In addition, Xenoturbella shares one miRNA with the ambulacrarians, and two with the acoels. Showing of extracted citations. MahlerBrian R. Phylogenomic analyses predict sistergroup relationship of nucleariids and Fungi and paraphyly of zygomycetes with significant support bmc evolutionary biology.

UCL Discovery

Photograph extracted from bioenv. Both were originally associated with the flatworms Platyhelminthesbut molecular data have revised their phylogenetic positions, generally linking Xenoturbellida to the deuterostomes and positioning the Acoelomorpha as the most basally branching bilaterian group s. Vincent Laudet 64 Estimated H-index: Teresa Aguado 8 Estimated H-index: When we minimize LBA we find consistent support for a position of both acoelomorphs and Xenoturbella within the deuterostomes.