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Chaetognath phylogenomics: a protostome with deuterostome-like development
Traditional textbook phylogeny splits bilaterians into protostomes and deuterostomes according to whether their mouth derives from the blastopore or not. This scheme has been largely confirmed byExpand
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Identification of chaetognaths as protostomes is supported by the analysis of their mitochondrial genome.
Determining the phylogenetic position of enigmatic phyla such as Chaetognatha is a longstanding challenge for biologists. Chaetognaths (or arrow worms) are small, bilaterally symmetrical metazoans.Expand
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Chætognath transcriptome reveals ancestral and unique features among bilaterians
BackgroundThe chætognaths (arrow worms) have puzzled zoologists for years because of their astonishing morphological and developmental characteristics. Despite their deuterostome-like development,Expand
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Systematics of Chaetognatha under the light of molecular data, using duplicated ribosomal 18S DNA sequences.
While the phylogenetic position of Chaetognatha has became central to the question of early bilaterian evolution, the internal systematics of the phylum are still not clear. The phylogeneticExpand
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Hox gene survey in the chaetognath Spadella cephaloptera: evolutionary implications
We present the isolation of six Hox genes in the chaetognath Spadella cephaloptera. We identified one member of the paralogy group 3, four median genes and a mosaic gene that shares features of bothExpand
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Phylogenetic Analysis of Thecosomata Blainville, 1824 (Holoplanktonic Opisthobranchia) Using Morphological and Molecular Data
Thecosomata is a marine zooplankton group, which played an important role in the carbonate cycle in oceans due to their shell composition. So far, there is important discrepancy between the previousExpand
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Evolutionary history of Chaetognatha inferred from molecular and morphological data: a case study for body plan simplification
BackgroundChaetognatha are a phylum of marine carnivorous animals which includes more than 130 extant species. The internal systematics of this group have been intensively debated since it wasExpand
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Fine structure of the ventral nerve centre and interspecific identification of individual neurons in the enigmatic Chaetognatha
The enigmatic arrow worms (Chaetognatha) are marine carnivores and among the most abundant planktonic organisms. Their phylogenetic position has been heavily debated for a long time. Most recentExpand
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Neurogenesis in an early protostome relative: progenitor cells in the ventral nerve center of chaetognath hatchlings are arranged in a highly organized geometrical pattern.
Emerging evidence suggests that Chaetognatha represent an evolutionary lineage that is the sister group to all other Protostomia thus promoting these animals as a pivotal model for our understandingExpand
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