Deuterostome - Wikipedia
Below is a phylogenetic tree showing consensus relationships among deuterostome taxa. Phylogenomic evidence suggests the enteropneust family, Torquaratoridae, fall within the Ptychoderidae. The tree is based on 16S +18S rRNA sequence data and phylogenomic studies from multiple sources.
Hemichordate genomes and deuterostome origins | Nature
2015年11月18日 · These phylogenetic analyses imply that genomic traits shared by chordates and ambulacrarians can be attributed to the last common deuterostome ancestor (see below). Using a relaxed molecular...
Deuterostome phylogeny reveals monophyletic chordates and the …
2006年10月18日 · The overall topology of this tree conforms to the ‘new animal phylogeny’ 18 with monophyletic protostomes, deuterostomes, lophotrochozoans (represented here by molluscs and an annelid), and...
Evolution of the chordate body plan: New insights from phylogenetic …
2000年4月25日 · Recent molecular phylogenies suggest that deuterostomes include only echinoderms, hemichordates, and chordates (1 – 4), because chaetognaths (5) and lophophorates (6 – 8) are likely to be protostomes. The chordates are composed of three subphyla, Vertebrata, Cephalochordata, and Urochordata.
The deuterostome context of chordate origins | Nature
2015年4月22日 · This group, the deuterostomes, provides the phylogenetic framework for developing hypotheses about the origin of chordate features through comparative morphology, embryology and genomics.
Molecular Phylogeny and Divergence Times of Deuterostome …
2005年7月27日 · Here, we have assembled available nuclear-encoded protein sequence data along with complete genome sequences to address phylogenetic relationships among deuterostomes. Molecular divergence times were also estimated using a Bayesian local clock method, which allows rates to vary among lineages, and robust fossil information to …
Deciphering deuterostome phylogeny: molecular, morphological …
2008年1月11日 · Deuterostomes are a monophyletic group of animals that include the vertebrates, invertebrate chordates, ambulacrarians and xenoturbellids. Fossil representatives from most major deuterostome groups, including some phylum-level crown groups, are found in the Lower Cambrian, suggesting that evolutionary divergence occurred in the Late Precambrian ...
Deciphering deuterostome phylogeny: molecular, morphological, …
Here we review four key areas where there has been the most heated debate in the last 5 years: phylogenetic relationships of the major deuterostome groups; the earliest fossil record and divergence times of deuterostome groups; the evolution of body axes; and the characteristics of the ancestral deuterostome body plan.
Deuterostome phylogeny: 25 years ago - Springer
Deuterostomes were largely recognized on the basis of shared embryological traits, including the namesake character, the fate of the blastopore (character 1), the tripartite division of the body plan with the three sets of coeloms derived from archenteric mesoderm (characters 2–4), and a largely diffuse, non-ventral nervous system.
The Invertebrate Deuterostomes: An Introduction to Their …
2004年1月1日 · The invertebrate deuterostomes comprise approximately 10,000 species of marine animals distributed throughout the oceans of the world. Recent molecular phylogenetic studies suggest that the deuterostomes include only the echinoderms, hemichordates, and chordates. Among the echinoderms, sea urchins are most widely used for developmental studies.