Cephalocarida

Cephalocarida
Hutchinsoniella macracantha
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Cephalocarida
Order:
Brachypoda
Family:
Hutchinsoniellidae

Sanders, 1955
Genera
Synonyms
  • Lightiellidae Jones 1961

Cephalocarida is a class inside the subphylum Crustacea that has only twelve shrimp-like benthic species. They were discovered in 1955, and are commonly referred to as horseshoe shrimps.

All cephalocaridans are in just one family: Hutchinsoniellidae. Even though there is no fossil record of cephalocaridans, most specialists believe them to be basal (primitive) among crustaceans.

Description and anatomy

These crustaceans are from 2 to 4 millimetres (0.079 to 0.157 in) in length, with a long body. They have no eyes, and live in a muddy natural habitat.[1]

The structural and functional similarity between the maxillae and the legs may be a sign of primitive organization; the maxillae are not specialized, as they are in other crustaceans.[1]

The thorax consists of 10 segments, and the abdomen bears a telson but no other appendages.

Ecology

Cephalocaridans are found from the intertidal zone down to a depth of 1500 metres, in all kinds of sediments. They feed on marine detritus. To bring in food particles, they make water currents with the thoracic appendages like the branchiopods and the malacostracans. Food particles are passed forward along a ventral groove, leading to the mouthparts.[2]

References

  1. ↑ 1.0 1.1 Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 672. ISBN 0-03-056747-5.
  2. ↑ L.A. Zenkevich. Animal life (Zhizn' Zhivotnykh) vol 2, chapter 7: Phylum Arthropoda.

Read other articles:

Jalur Zamoskvoretskaya

!B9993068528194  2  Jalur Zamoskvoretskaya IkhtisarJenisAngkutan cepatSistemMoscow MetroLokasiMoskwaTerminusRechnoy Vokzal (barat laut)Alma-Atinskaya (tenggara)Stasiun21Penumpang harian1.230.654[1]OperasiDibuka11 September 1938PemilikMoskovsky MetropolitenOperatorMoskovsky MetropolitenKarakteristik lintasBawah tanahRangkaian81-717/714Data teknisPanjang lintas398 kilometer (247 mi)Lebar sepur1.520 mm (4 ft 11+27⁄32 in)ElektrifikasiThird rai...

 

UIN Maulana Malik Ibrahim

Universitas Islam Negeri Maulana Malik Ibrahim MalangNama lainUIN Malang, UIN MalikiMotoBilingual University, Menciptakan Professional Yang Ulama' dan Ulama' yang ProfessionalJenisPerguruan tinggi Islam negeri di IndonesiaDidirikan21 Juni 2004 (SK Presiden)Lembaga indukKementerian Agama Republik IndonesiaAfiliasiIslamRektorProf. Dr. H. M. Zainuddin, MA.[1]AlamatKampus I Jl. Gajayana No. 50, Diyono, Lowokwaru, Malang 65144, IndonesiaKampus± 120 HaSitus webwww.uin-malang.ac.id Universi...

 

Erik Gustaf Geijer

Swedish writer, historian, poet, philosopher, and composer Erik Gustaf GeijerPortrait by Carl Wilhelm NordgrenBorn(1783-01-12)12 January 1783Ransäter, VärmlandDied23 April 1847(1847-04-23) (aged 64)Stockholm This article is part of a series onConservatism in Sweden Principles Cameralism Duty Elitism Meritocracy Law and order Liberal conservatism Ordered liberty Moderate conservatism Monarchism National conservatism Folkhemmet National romanticism Patriotism Property rights Rule of law ...

Principato di Halberstadt

Questa voce o sezione sull'argomento storia è priva o carente di note e riferimenti bibliografici puntuali. Commento: Nessuna bibliografia, una sola nota a supporto Sebbene vi siano una bibliografia e/o dei collegamenti esterni, manca la contestualizzazione delle fonti con note a piè di pagina o altri riferimenti precisi che indichino puntualmente la provenienza delle informazioni. Puoi migliorare questa voce citando le fonti più precisamente. Segui i suggerimenti del progetto di rif...

 

Soto y Amío

Questa voce o sezione sull'argomento centri abitati della Spagna non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Soto y Amíocomune Soto y Amío – Veduta LocalizzazioneStato Spagna Comunità autonoma Castiglia e León Provincia León TerritorioCoordinate42°46′00.12″N 5°52′59.88″W&...

 

Антерос

У этого термина существуют и другие значения, см. Антерос (значения). Антерос, Антерот, Антэрот Мифология древнегреческая религия[1] Пол мужской Занятие Покровительство отрицанию любви, страсти, ненависти, реже неразделенной любви Отец Хаос, позднее Арес Мать Отсутст�...

1872 United States presidential election in Vermont

Election in Vermont Main article: 1872 United States presidential election 1872 United States presidential election in Vermont ← 1868 November 5, 1872 1876 →   Nominee Ulysses S. Grant Horace Greeley Party Republican Liberal Republican Home state Illinois New York Running mate Henry Wilson Benjamin G. Brown Electoral vote 5 0 Popular vote 41,480 10,926 Percentage 78.29% 20.62% County Results Grant  60-70%  70-80%  80...

 

Glenside, Pennsylvania

Place in Pennsylvania, United StatesGlensideCensus-designated placeNeighborhood of Cheltenham TownshipEaston Road in GlensideGlensideLocation of Glenside in PennsylvaniaShow map of PennsylvaniaGlensideGlenside (the United States)Show map of the United StatesCoordinates: 40°06′11″N 75°09′08″W / 40.10306°N 75.15222°W / 40.10306; -75.15222Country United StatesState PennsylvaniaCountyMontgomeryTownshipsAbington, CheltenhamArea[1] •...

 

257 Central Park West

Co-op apartment building in Manhattan, New York 257 Central Park WestThe profile from the 86th Street transverse of Central ParkLocation on the Upper West SideFormer namesOrwell House, Peter Stuyvesant Hotel, Central Park View, 2 West 86th StreetGeneral informationArchitectural styleBeaux ArtsLocationManhattan, NY 10024Address257 Central Park WestCountryU.S.Coordinates40°47′06″N 73°58′11″W / 40.78500°N 73.96972°W / 40.78500; -73.96972Groundbreaking1905Comp...

The Mr. Peabody & Sherman Show

American animated streaming television series The Mr. Peabody & Sherman ShowGenreComedyMusicalHistoryBased onPeabody's Improbable Historyby Ted KeyMr. Peabody & Shermanby Craig WrightRob MinkoffDirected byJohn SanfordGreg MillerMike BellMiles ThompsonVoices of Chris Parnell Max Charles Da'Vine Joy Randolph Dieter Jansen Sunil Malhotra David P. Smith Josh Keaton Kari Wahlgren Theme music composerEric GoldmanMichael CorcoranOpening themeThe Mr. Peabody & Sherman Show Theme SongCompo...

 

Elezioni parlamentari in Ucraina del 1998

Elezioni parlamentari in Ucraina del 1998 Stato  Ucraina Data 29 marzo Assemblea Verchovna Rada Liste KPU NRU SPU - SelPU Voti 6.550.35324,65% 2.498.2629,40% 2.273.7888,56% Seggi 122 / 450 46 / 450 35 / 450 Distribuzione del voto per collegio 1994 2002 Le elezioni parlamentari in Ucraina del 1998 si tennero il 29 marzo. I 450 deputati furono eletti mediante un sistema misto: la metà dei seggi fu assegnata mediante sistema proporzionale, fra le liste che avessero superato il 4% dei voti...

 

Россотрудничество

Федеральное агентство по делам Содружества Независимых Государств, соотечественников, проживающих за рубежом, и по международному гуманитарному сотрудничествусокращённо: Россотрудничество Общая информация Страна  Россия Юрисдикция Россия Дата создания 6 сентября...

世界政區索引

此條目可能包含不适用或被曲解的引用资料，部分内容的准确性无法被证實。 (2023年1月5日)请协助校核其中的错误以改善这篇条目。详情请参见条目的讨论页。 各国相关 主題列表 索引 国内生产总值 石油储量 国防预算 武装部队（军事） 官方语言 人口統計 人口密度 生育率 出生率 死亡率 自杀率 谋杀率 失业率 储蓄率 识字率 出口额 进口额 煤产量 发电量 监禁率 死刑 国债 ...

 

Військово-музичне управління Збройних сил України

Військово-музичне управління Збройних сил України Тип військове формуванняЗасновано 1992Країна  Україна Емблема управління Військово-музичне управління Збройних сил України — структурний підрозділ Генерального штабу Збройних сил України призначений для планува...

 

Funke Opeke

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Oktober 2022. Funke Opeke Funke Opeke adalah seorang insinyur kelistrikan Nigeria. Ia juga adalah pendiri Main Street Technologies dan menjabar sebagai Chief Executive Officer untuk Main One Cable Company.[1][2] Kehidupan pribadi Opeke bersekolah di ...

Be with dot below

Cyrillic letter used in a 1920s Khakas alphabet Cyrillic letter Cyrillic letter Be with dot belowThe Cyrillic scriptSlavic lettersАА̀А̂А̄ӒБВГҐДЂЃЕЀЕ̄Е̂ЁЄЖЗЗ́ЅИІЇꙆЍИ̂ӢЙЈКЛЉМНЊОО̀О̂ŌӦПРСС́ТЋЌУУ̀У̂ӮЎӰФХЦЧЏШЩꙎЪЪ̀ЫЬѢЭЮЮ̀ЯЯ̀Non-Slavic lettersӐА̊А̃Ӓ̄ӔӘӘ́Ә̃ӚВ̌ԜГ̑Г̇Г̣Г̌Г̂Г̆Г̈г̊ҔҒӺҒ̌ғ̊ӶД́Д̌Д̈Д̣Д̆ӖЕ̃Ё̄Є̈ԐԐ̈ҖӜӁЖ̣ҘӞЗ̌З̣З̆ӠИ̃ӤҊҚӃҠҞ...

 

Kåre Ingebrigtsen

Norwegian footballer and manager (born 1965) Kåre Ingebrigtsen Ingebrigtsen managing Rosenborg in 2017Personal informationFull name Kåre Hedley IngebrigtsenDate of birth (1965-11-11) 11 November 1965 (age 58)Place of birth Trondheim, NorwayPosition(s) MidfielderTeam informationCurrent team Ranheim(manager)Youth career–1984 Utleira1984 MalvikSenior career*Years Team Apps (Gls)1985–1992 Rosenborg 141 (16)1987 → Frigg (loan) 1992–1994 Manchester City 15 (3)1993 → Rosenborg (loan...

 

Sonny Lubick Field at Hughes Stadium

Stadium in Colorado, U.S. (1968–2018) Sonny Lubick Fieldat Hughes StadiumAerial view from south in 2016Fort CollinsLocation in the United StatesShow map of the United StatesFort CollinsLocation in ColoradoShow map of ColoradoFormer namesHughes Stadium(1968–2002)LocationS. Overland TrailFort Collins, Colorado, U.S.Coordinates40°33′43″N 105°08′31″W / 40.562°N 105.142°W / 40.562; -105.142OwnerColorado State UniversityOperatorColorado State UniversityCapaci...

Forward Prizes for Poetry

British poetry award(s) AwardForward Prizes for PoetryAwarded forBest Collection (£10,000); Best First Collection (£5,000); Best Single Poem (£1,000)Sponsored byForward Worldwide, Arts Council England, The Esmée Fairbairn Foundation, The estate of Felix DennisDate1992LocationUnited Kingdom The Forward Prizes for Poetry are major British awards for poetry, presented annually at a public ceremony in London. They were founded in 1992 by William Sieghart with the aim of celebrating excellence...

 

Apirak Kosayodhin

Apirak Kosayodhinอภิรักษ์ โกษะโยธินGubernur Apirak Kosayodhin Gubernur BangkokMasa jabatan29 Agustus 2004 – 13 November 2008PendahuluSamak SundaravejPenggantiSukhumbhand Paribatra Informasi pribadiLahir30 Maret 1961 (umur 63)Pak Kret, Nonthaburi, ThailandPartai politikPartai DemokratSuami/istriPatima KosayodhinAlma materUniversitas Chiang MaiProfesiPolitikusSunting kotak info • L • B Apirak Kosayodhin (bahasa Thai: อภิ�...