Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Deuterostome> ?p ?o }
- Deuterostome abstract "Deuterostomes (taxonomic term: Deuterostomia; from the Greek: "mouth second") are any members of a superphylum of animals. Deuterostomia is a subtaxon of the Bilateria branch of the subkingdom Eumetazoa, within Animalia, and are distinguished from protostomes by their embryonic development; in deuterostomes, the first opening (the blastopore) becomes the anus, while in protostomes it becomes the mouth. Deuterostomes are also known as enterocoelomates because their coelom develops through enterocoely.There are four extant phyla of deuterostomes: Phylum Chordata (vertebrates and their kin) Phylum Echinodermata (sea stars, sea urchins, sea cucumbers, etc.) Phylum Hemichordata (acorn worms and possibly graptolites) Phylum Xenacoelomorpha (2 species of worm-like animals)Superphylum Deuterostomia was redefined in 1995 based on molecular sequence analyses when the lophophorates were removed from it and combined with other protostome animals to form superphylum Lophotrochozoa. The phylum Chaetognatha (arrow worms) may also belong here. Extinct groups may include the phylum Vetulicolia. Echinodermata, Hemichordata and Xenoturbellida form the clade Ambulacraria. The present phylum Priapulida also has a deuterostomic development, despite being otherwise placed within the protostomes.In both deuterostomes and protostomes, a zygote first develops into a hollow ball of cells, called a blastula. In deuterostomes, the early divisions occur parallel or perpendicular to the polar axis. This is called radial cleavage, and also occurs in certain protostomes, such as the lophophorates. Most deuterostomes display indeterminate cleavage, in which the developmental fate of the cells in the developing embryo are not determined by the identity of the parent cell. Thus if the first four cells are separated, each cell is capable of forming a complete small larva, and if a cell is removed from the blastula the other cells will compensate.In deuterostomes the mesoderm forms as evaginations of the developed gut that pinch off, forming the coelom. This is called enterocoely.Both the Hemichordata and Chordata have gill slits, and primitive fossil echinoderms also show signs of gill slits. A hollow nerve cord is found in all chordates, including tunicates (in the larval stage). Some hemichordates also have a tubular nerve cord. In the early embryonic stage it looks like the hollow nerve cord of chordates. Because of the degenerated nervous system of echinoderms, it is not possible to discern much about their ancestors in this matter, but based on different facts it is quite possible that all the present deuterostomes evolved from a common ancestor that had pharyngeal gill slits, a hollow nerve cord, circular and longitudinal muscles and a segmented body. It could have resembled the small group of Cambrian urochordate deuterostomes named Vetulicolia.".
- Deuterostome thumbnail Sea_cucumber.jpg?width=300.
- Deuterostome wikiPageExternalLink deuterostomia.html.
- Deuterostome wikiPageExternalLink Deuterostomia.
- Deuterostome wikiPageExternalLink ?tool=pubmed.
- Deuterostome wikiPageID "19818280".
- Deuterostome wikiPageLength "15437".
- Deuterostome wikiPageOutDegree "148".
- Deuterostome wikiPageRevisionID "683362589".
- Deuterostome wikiPageWikiLink Acoelomorpha.
- Deuterostome wikiPageWikiLink Acorn_worm.
- Deuterostome wikiPageWikiLink Acorn_worms.
- Deuterostome wikiPageWikiLink Actinopterygii.
- Deuterostome wikiPageWikiLink Agnatha.
- Deuterostome wikiPageWikiLink Ambulacraria.
- Deuterostome wikiPageWikiLink Amphibian.
- Deuterostome wikiPageWikiLink Amphibians.
- Deuterostome wikiPageWikiLink Animal.
- Deuterostome wikiPageWikiLink Anus.
- Deuterostome wikiPageWikiLink Asterozoa.
- Deuterostome wikiPageWikiLink Batoidea.
- Deuterostome wikiPageWikiLink Bilateria.
- Deuterostome wikiPageWikiLink Bird.
- Deuterostome wikiPageWikiLink Birds.
- Deuterostome wikiPageWikiLink Blastopore.
- Deuterostome wikiPageWikiLink Blastula.
- Deuterostome wikiPageWikiLink Body_cavity.
- Deuterostome wikiPageWikiLink Bone_tissue.
- Deuterostome wikiPageWikiLink Bony_fish.
- Deuterostome wikiPageWikiLink Brittle_star.
- Deuterostome wikiPageWikiLink Brittle_stars.
- Deuterostome wikiPageWikiLink Burgess_Shale.
- Deuterostome wikiPageWikiLink Cambrian.
- Deuterostome wikiPageWikiLink Cartilaginous_fish.
- Deuterostome wikiPageWikiLink Category:Deuterostomia.
- Deuterostome wikiPageWikiLink Category:Ediacaran_first_appearances.
- Deuterostome wikiPageWikiLink Catellocaula.
- Deuterostome wikiPageWikiLink Cephalochordata.
- Deuterostome wikiPageWikiLink Cephalochordate.
- Deuterostome wikiPageWikiLink Chaetognatha.
- Deuterostome wikiPageWikiLink Chengjiang_fauna.
- Deuterostome wikiPageWikiLink Chimaera.
- Deuterostome wikiPageWikiLink Chimaeras.
- Deuterostome wikiPageWikiLink Chondrichthyes.
- Deuterostome wikiPageWikiLink Chordata.
- Deuterostome wikiPageWikiLink Chordate.
- Deuterostome wikiPageWikiLink Cleavage_(embryo).
- Deuterostome wikiPageWikiLink Cnidaria.
- Deuterostome wikiPageWikiLink Cnidarians.
- Deuterostome wikiPageWikiLink Coelom.
- Deuterostome wikiPageWikiLink Craniata.
- Deuterostome wikiPageWikiLink Craniate.
- Deuterostome wikiPageWikiLink Crinoid.
- Deuterostome wikiPageWikiLink Crinozoa.
- Deuterostome wikiPageWikiLink Cyclostomata.
- Deuterostome wikiPageWikiLink Echinoderm.
- Deuterostome wikiPageWikiLink Echinodermata.
- Deuterostome wikiPageWikiLink Echinoderms.
- Deuterostome wikiPageWikiLink Echinozoa.
- Deuterostome wikiPageWikiLink Ediacara_biota.
- Deuterostome wikiPageWikiLink Ediacaran_biota.
- Deuterostome wikiPageWikiLink Embryogenesis.
- Deuterostome wikiPageWikiLink Embryonic_development.
- Deuterostome wikiPageWikiLink Encyclopædia_Britannica.
- Deuterostome wikiPageWikiLink Endodermic_evagination.
- Deuterostome wikiPageWikiLink Enterocoely.
- Deuterostome wikiPageWikiLink Ernietta.
- Deuterostome wikiPageWikiLink Eumetazoa.
- Deuterostome wikiPageWikiLink Evagination.
- Deuterostome wikiPageWikiLink File:Strix-varia-005.jpg.
- Deuterostome wikiPageWikiLink Fish.
- Deuterostome wikiPageWikiLink Gastrulation.
- Deuterostome wikiPageWikiLink Germ_layer.
- Deuterostome wikiPageWikiLink Gill_slit.
- Deuterostome wikiPageWikiLink Gnathostomata.
- Deuterostome wikiPageWikiLink Graptolite.
- Deuterostome wikiPageWikiLink Graptolithina.
- Deuterostome wikiPageWikiLink Hagfish.
- Deuterostome wikiPageWikiLink Haikouella.
- Deuterostome wikiPageWikiLink Haikouella_lanceolata.
- Deuterostome wikiPageWikiLink Haikouichthys.
- Deuterostome wikiPageWikiLink Hemichordata.
- Deuterostome wikiPageWikiLink Hemichordate.
- Deuterostome wikiPageWikiLink Hemichordates.
- Deuterostome wikiPageWikiLink Holocene.
- Deuterostome wikiPageWikiLink Holothuroidea.
- Deuterostome wikiPageWikiLink Incertae_sedis.
- Deuterostome wikiPageWikiLink Indeterminate_cleavage.
- Deuterostome wikiPageWikiLink Jawed_vertebrates.
- Deuterostome wikiPageWikiLink Jawless_fish.
- Deuterostome wikiPageWikiLink Jellyfish.
- Deuterostome wikiPageWikiLink Karl_Grobben.
- Deuterostome wikiPageWikiLink Kimberella.
- Deuterostome wikiPageWikiLink Lamprey.
- Deuterostome wikiPageWikiLink Lampreys.
- Deuterostome wikiPageWikiLink Lancelet.
- Deuterostome wikiPageWikiLink Lancelets.
- Deuterostome wikiPageWikiLink Lobe-finned_fish.
- Deuterostome wikiPageWikiLink Lophophorate.
- Deuterostome wikiPageWikiLink Lophophore.