http sn2000.taxonomy.nl Taxonomicon TaxonTree.aspx?id 40615 Systema Naturae 2000 Taxon Phylum Chaetognatha ... Taxonomicon TaxonTree.aspx?id 40615 Systema Naturae 2000 Taxon Phylum Chaetognatha per ... 16890509 issue 15 ref Chaetognatha appears close to the base of the protostome tree in most studies ... References Reflist 2 External links commonscat Chaetognatha http www.tafi.org.au zooplankton imagekey chaetognatha images sagitta anatomy full.jpg Image of Pseudosagitta gazellae with a krill in its ...?menuentry zoeken&id &selected wetenschap Chaetognatha of the World last retrieved December 13, 2006 ... bg ca Quet gnat cs Ploutvenky de Pfeilw rmer et Harjasl ugsed es Chaetognatha fa fr Chaetognatha gl Quetognato ko is P lormar it Chaetognatha la Chaetognatha lv Sar ok ai i lt eria and iai hu Ny lf rgek ja no Pilormer oc Chaetognatha pl Szczecioszcz kie pt Chaetognatha ru simple Chaetognatha sk tetinato stky sr fi Nuolimadot sv Pilmaskar tl Chaetognatha tr K ll eneliler uk vi Chaetognatha zh ... more details
Unreferenced date March 2007 File Proboscis worm.JPG thumb right 150px An example of a marine worm, the Parborlasia corrugatus lives at depths of up to 4,000 metres. Any worm that lives in a ocean marine environment biophysical environment is considered a marine worm . Marine worms are found in several different phylum biology phyla , including the Platyhelminthes , Nematoda , Annelida segmented worms , Chaetognatha , Hemichordata , and Phoronida . These worms have specialized tentacles used for exchanging oxygen and giving out carbon dioxide, plus they are used for reproduction. Some marine worms are tube worm body plan tube worm s, of which the giant tube worm lives in waters near underwater volcanoes , and can withstand temperatures up to 90 degrees Celsius or about 194 degrees Fahrenheit. DEFAULTSORT Marine worm Category Aquatic organisms Invertebrate stub ... more details
Unreferenced stub auto yes date December 2009 Louis Marie Adolphe Olivier douard Joubin 27 January 1861 24 April 1935 was a professor at the Mus um national d Histoire naturelle in Paris . He published works on nemertea ns, chaetognatha , cephalopod s, and other Mollusk molluscs . Joubin s Squid is named for him. Persondata Metadata see Wikipedia Persondata . NAME Joubin, Louis ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 1861 PLACE OF BIRTH DATE OF DEATH 1935 PLACE OF DEATH DEFAULTSORT Joubin, Louis Category 1861 births Category 1935 deaths Category Teuthologists Zoologist stub France scientist stub de Louis Joubin fr Louis Joubin pl Louis Joubin pt Louis Joubin ... more details
Taxobox name Eukrohniidae regnum Animal ia superphylum Deuterostomia phylum Chaetognatha classis Sagittoidea ordo Phragmophora familia Eukrohniidae familia authority Brusca & Brusca , 1990 subdivision ranks Genus subdivision Bathyspadella Eukrohnia Heterokrohnia Kukrohnia Eukrohniidae is a Family biology family of arrow worm s. History The species Eukrohnia hamata was identified by Mobius in 1875. The genus was named Eukrohnia by Ritter Zahony in 1909 after August David Krohn . The whole family was named Eukrohniidae by Brusca & Brusca in 1990. Genera Genus Bathyspadella Genus Eukrohnia Genus Heterokrohnia Genus Kukrohnia References http www.vattenkikaren.gu.se Fakta arter chaetogn eukrohni eukre.html Eukrohnia arrow worm http oceanexplorer.noaa.gov explorations 02arctic logs mis sum pelagic media e hamata.html Eukrohnia hamata at NOAA http www.taxonomy.nl Main Classification 40622.htm Family Eukrohniidae at the Taxonomicon Category Animals ... more details
Orphan date April 2009 For the Canadian politician, see Barbara Sullivan . Barbara K. Sullivan is a notable United States American marine biology marine biologist . She is featured in an exhibit at the New England Aquarium for her work on comb jellies, also called ctenophore s, and creatures such as chaetognatha and copepod s. She is a professor at the University of Miami , and was previously an associate professor at the University of Rhode Island . Sullivan has published extensively. ref http scholar.google.com scholar?hl en&lr &q 22barbara k. sullivan 22&btnG Search Google Scholar search . Retrieved March 31, 2009. ref See also Laurence Madin References reflist External links DEFAULTSORT Sullivan, Barbara Category Living people Category American marine biologists US biologist stub ... more details
nihongo Takasi Tokioka Tokioka Takashi 1913 September 30, 2001 was a Japanese zoologist . He published over 200 scientific articles on marine animals such as Chaetognatha chaetognaths , ctenophore s, and tunicate . He was Professor of Zoology at Kyoto University working at the Seto Marine Biological Laboratory in Shirahama, Wakayama Shirahama, Japan . From 1975 1977, he was the Director of SMBL ref Nishikawa, T. 2001. Obituary of Dr. Takasi Tokioka. Ascidian News . 50 2 3. http nsm.fullerton.edu 7Elamberts ascidian an50.html ref . At least a dozen species are named in his honor ref Biographical Etymology of Marine Organism Names http www.tmbl.gu.se libdb taxon personetymol petymol.tu.html ref . References Reflist Persondata Metadata see Wikipedia Persondata . NAME Tokioka, Takasi ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Tokioka, Takasi Category 1913 births Category 2001 deaths Category Japanese marine biologists Category Japanese zoologists Japan scientist stub zoologist stub ja ... more details
The Aschelminthes also known as Aeschelminthes , closely associated with the Platyhelminthes , are an obsolete phylum of pseudocoelomate and other similar animals that are no longer considered closely related and have been promoted to phyla in their own right. The term Aschelminth is now generally only used as an informal name for any member of the approximately ten different invertebrate phyla formerly included within Aschelminthes. It is considered a polyphyletic group. ref name pmid8524046 cite journal author Winnepenninckx B, Backeljau T, Mackey LY, et al. title 18S rRNA data indicate that Aschelminthes are polyphyletic in origin and consist of at least three distinct clades journal Mol. Biol. Evol. volume 12 issue 6 pages 1132 7 year 1995 month November pmid 8524046 doi url http mbe.oxfordjournals.org cgi pmidlookup?view long&pmid 8524046 ref Subdivisions Although invertebrate experts Fact date October 2008 do not necessarily agree on these categorizations, groups that are generally incorporated into Aschelminthes include Acanthocephala Chaetognatha Symbion Cycliophora Gastrotrich a Kinorhyncha Loricifera Roundworm Nematoda Nematomorpha Priapulida Rotifer a In addition, Priapulida , Entoprocta , and Tardigrade Tardigrada are sometimes included. Fact date June 2009 References reflist External links http www.ucmp.berkeley.edu aschelminthes aschelminthes.html Introduction to the Aschelminth Phyla http www.ltcconline.net kloss bio212 ch 11.htm Aschelminth information page Animalia Category Zoology Category Obsolete taxonomic groups roa rup Nemathelminthes ca Pseudocelomat cs Hl sti de Schlauchw rmer es Pseudocoelomata fr Aschelminthes id Nemathelminthes ka la Aschelminthes oc Aschelminthe pl Oble ce pt Asquelminto ru sk Pseudocoelomata sl Valjasti rvi sr zh ... more details
Gelatinous zooplankton is the term used to describe the fragile animals that live in the water column in the ocean. They have very delicate bodies that are easily damaged or destroyed. ref Lalli & Parsons 2001 ref Gelatinous zooplankton are often transparent. ref Johnsen 2000 ref All jellyfish are gelatinous zooplankton, but not all gelatinous zooplankton are jellyfish. The most commonly encountered organisms include ctenophore s, medusae , salps , and Chaetognatha in coastal waters. However, almost all marine phyla, including Annelida , Mollusca and Arthropoda , contain gelatinous species, but many of those odd species live in the open ocean and the deep sea and are less available to the casual ocean observer. ref Nouvian 2007 ref Gelatinous zooplankton have also been called Gelata . ref Haddock 2004 ref See also Aurelia genus Aurelia Notes reflist References aut Haddock, S.D.H. 2004 A golden age of gelata past and future research on planktonic ctenophores and cnidarians. Hydrobiologia 530 531 549 556. aut Johnsen, S. 2000 Transparent Animals. Scientific American 282 62 71. aut Lalli, C.M. & Parsons, T.R. 2001 Biological Oceanography . Butterworth Heinemann. aut Nouvian, C. 2007 The Deep . University of Chicago Press. External links http oceanexplorer.noaa.gov explorations 02arctic logs mis sum pelagic pelagic.html Ocean Explorer Gelatinous zooplankton from the Arctic Ocean http jellieszone.com Jellyfish and other gelatinous zooplankton http planktonnet.awi.de PLANKTON NET information on all types of plankton including gelatinous zooplankton http www.thedeepbook.org Deep sea gelatinous zooplankton from The Deep Nouvian, 2007 invertebrate stub plankton Category Animals Category Marine biology Category Biological oceanography Category Planktology ... more details
Image Haeckel Actiniae.jpg thumb right The 49th plate from Ernst Haeckel s Kunstformen der Natur , 1904, showing various sea anemones classified as Actiniae Marine invertebrates are animals that inhabit a Marine ocean marine environment and are invertebrate s, lacking a vertebral column . In order to protect themselves, they may have evolved a Animal shell shell or a hard exoskeleton , but this is not always the case. As on land and in the air, invertebrates make up a great majority of all macroscopic life in the sea. Invertebrate sea life includes Acoela Annelida , polychaete s and sea leech s Brachiopoda Bryozoa , also known as moss animals or sea mats Chaetognatha Cephalochordata Cnidaria , such as jellyfish , sea anemone s, and corals Crustacea , including lobster s, crab s, shrimp , crayfish , barnacle s, Hermit crab , Mantis shrimp , Daphnia , Copepod s, and Sea Monkeys Ctenophora , also known as comb jellies Echinodermata , including sea star s, brittle star s, sea urchin s, sand dollar s, Holothuroidea sea cucumber s, crinoid s, and sea daisy sea daisies Echiura Gnathostomulid s Gastrotricha Hemichordata Kamptozoa Kinorhyncha Loricifera Merostomata also know known as horseshoe crab s Mollusca , including shellfish , squid , octopus , whelk s, Nautilus , cuttlefish , nudibranch s, scallop s, sea snail s, Aplacophora , Caudofoveata , Monoplacophora , Polyplacophora , and Scaphopoda Myzostomida Nemertinea ribbon worms Orthonectida Phoronida Placozoa Porifera sponges Priapulida Pycnogonida Sipunculida Tunicata , also known as sea squirts Some flatworms of the classes Turbellaria and Monogenea Xenoturbella Xiphosura . See also African Invertebrates Marine biology Marine vertebrate List of marine aquarium invertebrate species References http www.earthlife.net inverts an phyla.html List of Animal Phyla invertebrate stub aquatic ecosystem topics expanded marine Category Marine biology pt Invertebrados marinhos ... more details
Animals ref or not include them in any superphylum. The arrow worms Chaetognatha have proven particularly ... label3 Parenchymia 3 clade 1 Platyhelminthes 2 Nemertini label4 Gnathifera 4 clade 1 Chaetognatha ... more details
Taxobox image Themisto gaudichaudii.jpg regnum Animal ia phylum Arthropod a subphylum Crustacean Crustacea classis Malacostraca ordo Amphipoda familia Hyperiidae genus Themisto genus Themisto species T. gaudichaudii binomial Themisto gaudichaudii binomial authority F lix douard Gu rin M neville Gu rin M neville , 1825 Themisto gaudichaudii is an amphipod crustacean of the suborder Hyperiidea . Relatives The 260 species of hyperiid amphipods are large eyed and plankton ic amphipods, whereas Gammaridea gammarid amphipods have smaller eyes and tend to live on the sea floor. The handful of species of the genus Themisto are the most abundant of all amphipods. Unlike other hyperiids, which parasitism parasitise gelatinous animals such as salp s and jellyfish , Themisto swims free in the plankton, and is much sleeker and more streamlined than other amphipods. Themisto often form dense swarm s, similar to krill swarms. Themisto gaudichaudii is a voracious predator of anything smaller than itself, and occasionally of animals its own size or larger. In most places the most abundant members of the plankton community are copepod s, which make up the bulk of the diet of T. gaudichaudii , but it also eats fish larva e, Chaetognatha chaetognath s, pteropod s, juvenile krill and anything else it comes across. The long arthropod leg limbs are folded against the body for swimming, and extend to catch prey in a similar way to the praying mantis . Ecology Themisto gaudichaudii is the Southern Ocean species of the genus, ranging through the Antarctic region and further north onto Southern Hemisphere continental shelves . In many places, Themisto gaudichaudii is the most abundant predator in the plankton, and is often the third most abundant member of the plankton community, after copepods and krill. Themisto gaudichaudii is an important prey item for predators such as the Macaroni Penguin and Notothenioidei icefish , as well as many species of seabird s, notably diving petrel s. Descri ... more details
File Drosophila melanogaster side aka .jpg thumb right This invertebrate, Drosophila melanogaster , has been the subject of much research. An invertebrate is an animal without a backbone. The group includes 95 of all animal species ref Encarta Reference Library Home Premium 2005 DVD. Article Invertebrate. ref all animals except those in the chordate subphylum vertebrate Vertebrata fish , amphibian s, reptile s, bird s, and mammal s . Invertebrates form a paraphyletic group. All the listed phyla are invertebrates along with two of the three subphylum subphyla in Phylum chordate Chordata Tunicata Urochordata and Lancelet Cephalochordata . These two, plus all the other known invertebrates, have only one cluster of Hox gene s, while the vertebrates have duplicated their original cluster more than once. Within paleozoology palaeozoology and paleobiology palaeobiology , invertebrates are often studied within the fossil discipline called invertebrate paleontology invertebrate palaeontology . History Carl Linnaeus divided these animals into only two groups, the Insect a and the now obsolete vermes worm s . Jean Baptiste Lamarck , who was appointed to the position of Curator of Insecta and Vermes at the Mus um National d Histoire Naturelle in 1793, both coined the term invertebrate to describe such and divided the original two groups into ten, by splitting off Arachnid a and Crustacean Crustacea from the Linnean Insecta, and Mollusca , Annelida , Barnacle Cirripedia , Radiata , Coelenterata and Infusoria from the Linnean Vermes. They are now classified into over 30 phylum biology phyla , from simple organisms such as sea sponge s and flatworm s to complex animals such as arthropod s and Mollusca molluscs . Phyla and common examples File Cladocora.jpg right thumb The fossil coral Cladocora from the Pliocene of Cyprus Acanthocephala Acoelomorpha Annelid a segmented worms earthworm s, leech es, polychaete s Arthropod a insect s, arachnid s, crustacean s Brachiopoda Bryozoa Chae ... more details
Image Grassi Giovanni Battista 1854 1925.jpg thumb 230px Giovanni Battista Grassi Giovanni Battista Grassi 1854 4 May 1925 was an Italy Italian zoologist , known for work demonstrating that mosquito s carry the malaria parasite Plasmodium in their digestive tract, on the embryological development of honey bees , on parasites, particularly the vine parasite phylloxera , migrations and metamorphosis in eel s, and on termites . Biography Grassi was born in Rovellasca , in what is now the province of Como . He graduated in Medicine from the University of Pavia under professors Camillo Golgi and Giulio Bizzozero . After graduation he worked on Parasitic worm parasitic worms of medical importance especially the hookworm in the Department of Comparative Anatomy at Sapienza University of Rome Sapienza University in Rome . From 1878 Grassi worked first at Messina in the Oceanographic Station founded by Nicolaus Kleinenberg and Anton Dohrn where he studied Chaetognatha then at Heidelberg with Karl Gegenbaur and Otto B tschli . While in Heidelberg Grassi married Maria Koenen. In 1883 he became Professor of Comparative Zoology at the University of Catania , studying Cestoda cestodes , the life cycle of the European eel Catania and the Moray eel Rome . Also in Catania he began to study entomology and wrote a student text The Origin and Descent of Myriapods and Insects in addition to scientific papers. He also began to study malaria working with Raimondo Feletti on malaria, especially Avian malaria bird malaria . In 1895 Grassi was appointed professor of comparative anatomy at Rome University and joined Angelo Celli , Amico Bignami , Giuseppe Bastianelli and Ettore Marchiafava a group working on malaria in districts around Rome. Grassi was the group s entomologist. The group announced at the session of the Accademia dei Lincei on December 4th 1989 that a healthy man in a non malarial zone had contracted tertian malaria after being bitten by an experimentally infected Anopheles cl ... more details
galerita Chaetognatha Sagittidae 2003 ref cite journal author Tuba Terbiyik, Cem Cevik, Benin Toklu Alicli & Ercan Sarihan year 2007 title First record of Ferosagitta galerita Dallot, 1971 Chaetognatha ... more details
italictitle Taxobox image Amiskwia3.png regnum Animal ia phylum incertae sedis genus Amiskwia species A. sagittiformis binomial Amiskwia sagittiformis Amiskwia is a large, soft bodied invertebrate of unknown affinity known from fossil s of the Middle Cambrian Lagerst tten both in the Burgess shale formation in British Columbia and the Maotianshan shales of Yunnan Province, China. Image Amiskwia sagittiformis.jpg thumb left Amiskwia sagittiformis Very few specimens of this organism have been found, only eighteen in the Burgess shale ref name SCM1977 ref name Caron2006 cite doi 10.2110 palo.2003.P05 070R ref which may be a reflection of its genuine rarity, but is more likely to be due to taphonomic preservational or behavioural factors. The fossils reach Convert 25 mm in 0 abbr on in length. The head is rounded, tipped with two tentacles , and appears to contain a four ganglion brain the body flattens out and broadens in the trunk, which appears to have been fairly muscular. Where the trunk meets the head there is a small tubular opening, which can be interpreted as the mouth the gut terminates where the trunk narrows and meets the tail, which is broad and paddle shaped. The body morphology suggests a free energetic swimmer, which may be consistent with the dearth of fossils. Amiskwia was originally categorized by Paleontology paleontologist Charles Walcott . Walcott thought he saw three buccal spines in the fossils, and therefore categorized Amiskwia as a chaetognatha chaetognath worm arrow worm . However, Amiskwia appears to lack the characteristic grasping spines and teeth of other Burgess fossil arrow worms. Later scientists suggested an affinity with the nemertea ns ribbon worms , but the evidence for this was somewhat inadequate. ref name SCM1977 cite doi 10.1007 BF02986576 ref Simon Conway Morris Conway Morris , on re examining of the Burgess Shale fauna in the 1970s, described it as being the single known species in an otherwise unknown phylum biology phylum , ... more details
Taxobox name Eumetazoa fossil range fossil range Ediacaran Recent image Branchiostoma lanceolatum.jpg image width 250px image caption A lancelet domain Eukaryota unranked regnum Opisthokont a regnum Animal ia subregnum Eumetazoa subregnum authority Butschli, 1910 subdivision ranks Phylum Phyla subdivision Radiata unranked Ctenophore Ctenophora Cnidaria Bilateria unranked Orthonectida Rhombozoa Acoelomorpha Chaetognatha Superphylum Deuterostomia Chordata Hemichordata Echinoderm ata Xenoturbellida Vetulicolia extinction Protostomia unranked Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Lobopodia extinction Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Hyolitha extinction Nemertea Phoronida Bryozoa Entoprocta Brachiopoda Mollusca Annelida Echiura Eumetazoa Greek eu , well met , after z on , animal is a clade comprising all major animal groups except sponge s, placozoa and several other little known animals clarify date November 2010 . Characteristics of eumetazoans include true Biological tissue tissues organized into germ layer s, and an embryo that goes through a gastrula stage. The clade is usually held to contain at least Ctenophore Ctenophora , Cnidaria , and Bilateria . Whether mesozoan s and placozoan s belong is in dispute. Some phylogenetics phylogenists have speculated the sponges and eumetazoans Evolution evolved separately from single celled organisms, which would mean that the animal kingdom does not form a clade a complete grouping of organisms descended from a common ancestor . However, genetic studies and some morphological characteristics, like the common presence of choanocyte s, support a common origin. ref cite journal author Philippe H, Derelle R, Lopez P, et al. title Phylogenomics revives traditional views on deep animal relationships journal Curr. Biol. volume ... more details
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