Brachyopterus

Brachyopterus
Temporal range: Middle Ordovician, 460 Ma
↓
Reconstruction of Brachyopterus stubblefieldi
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Order: †Eurypterida
Superfamily: †Rhenopteroidea
Family: †Rhenopteridae
Genus: †Brachyopterus
Størmer, 1951
Type species
†Brachyopterus stubblefieldi
Størmer, 1951

Brachyopterus is a genus of prehistoric eurypterid of the family Rhenopteridae. It is one of the earliest known eurypterids,[1] having been recovered from Middle Ordovician deposits in Montgomeryshire, Wales.[2] Though other species have been assigned to it in the past, Brachyopterus is today recognized as containing one valid species, B. stubblefieldi.[2]

Description

Size comparison of B. stubblefieldi with a human hand.

Brachyopterus is distinguished by its small size, compound eyes with axes converging anteriorly on a subtrapezoid to subpentagonal prosoma (head). All of its legs are walking legs; the first three pairs are short with spines, except when modified into clasping organs; the last two pairs are moderately long, keeled and tapering in width to terminal claws. The last leg falls short of the penultimate abdominal segment. The abdomen is narrow and ends in a short styliform telson. Brachyopterus date from the Middle Ordovician.[3]

Classification

Kjellesvig-Waering (1966) concluded that "there is no other genus that warrants comparison, or, indeed at our present state of knowledge, reveals any close affinities with this very unusual genus", though the genus was able to be classified as a stylonurine.[4] In later years, further similarities have been noted between Brachyopterus and the rhenopterids. Lamsdell et al. (2010) classified it as the most basal of the rhenopterids and a sister taxon to more derived rhenopterids (such as Kiaeropterus and Rhenopterus).[5]

See also

References

  1. ^ James C. Lamsdell, Simon J. Braddy & O. Erik Tetlie (2010). "The systematics and phylogeny of the Stylonurina (Arthropoda: Chelicerata: Eurypterida)". Journal of Systematic Palaeontology. 8 (1): 49–61. doi:10.1080/14772011003603564.
  2. ^ a b Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch , version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).
  3. ^ Størmer, L. 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, pp. 36–37.
  4. ^ "Page:A Revision of the Families and Genera of the Stylonuracea (Eurypterida).djvu/17 - Wikisource, the free online library". en.wikisource.org. Retrieved 2017-12-14.
  5. ^ James C. Lamsdell, Simon J. Braddy & O. Erik Tetlie (2010). "The systematics and phylogeny of the Stylonurina (Arthropoda: Chelicerata: Eurypterida)". Journal of Systematic Palaeontology. 8 (1): 49–61. doi:10.1080/14772011003603564. S2CID 85398946.

Read other articles:

Depressione mediterranea

Il ciclone Zeo del dicembre 2005. Durante la sua formazione, a sud di Creta, ha provocato sull'isola venti temporaleschi, alluvioni, danni e vittime. La depressione mediterranea è un'area di bassa pressione che si instaura nel bacino del Mediterraneo.[1] Le situazioni Vb si verificano di solito dalla primavera all'autunno, ma in linea di principio possono verificarsi in qualsiasi momento dell'anno e, con solo pochi eventi all'anno, sono tra le situazioni meteorologiche più rare in E...

 

 

Christina Cole

Christina ColeCole in September 2010Lahir08 Mei 1982 (umur 41)London, EnglandAlmamaterOxford School of DramaPekerjaanActressTahun aktif2002–present Christina Cole (lahir 8 Mei 1982) adalah seorang aktris film dan televisi asal Inggris. Ia merupakan seorang sarjana seni dari Oxford School of Drama, Inggris. Ia menjadi bintang utama dalam serial TV Hex, yang disiarkan oleh channel SkyOne Inggris. Dalam serial itu ia berperan sebagai Cassie Hughes. Setelah meninggalkan Hex di season...

 

 

Nakba

Eksodus Palestina 1948 Artikel utama Keluaran Palestina 1948 Perang Palestina 1947–1949 Perang saudara 1947–1948 Perang Arab-Israel 1948 Penyebab eksodus Hari Nakbah Kamp pengungsi Palestina Pengungsi Palestina Hak pemulangan Palestina Present absentee Komite Peralihan Resolusi 194 Latar Mandat Britania atas Palestina Deklarasi kemerdekaan Israel Sejarah konflik Israel-Palestina Sejarawan Baru Palestina · Plan Dalet Rencana pembagian 1947 · UNRWA Insiden utama Perte...

Boulder Dash (video game)

1984 video game 1984 video gameBoulder DashDeveloper(s)Data East (1990 arcade, NES)Beam Software (Game Boy)Publisher(s)NA: First Star SoftwareEU: MirrorsoftDesigner(s)Peter LiepaChris GrayProgrammer(s)Kazunori IshiguriToshiyuki SakaiHisatada Ohta (1990 arcade)Composer(s)Azusa HaraFuse (1990 arcade)Platform(s) Atari 8-bit Acorn Electron, Amstrad CPC, Apple II, Arcade, Atari 2600, BBC Micro, ColecoVision, Commodore 64, FM-7, Game Boy, IBM PC, Intellivision, iOS, MSX, NES, PC-88, PMD 85, Super C...

 

 

ملعب خوليو مارتينيز برادانوس الوطني

ملعب خوليو مارتينيز برادانوس الوطنيEstadio Nacional Julio Martínez Prádanos (بالإسبانية) معلومات عامةالمنطقة الإدارية Ñuñoa (en) [1] البلد  تشيلي[2][1] موقع الويب ind.cl… التشييد والافتتاحالافتتاح الرسمي 3 ديسمبر 1938 المهندس المعماري كارل برونر المقاول الرئيسي Ñuñoa (en) الاستعمالالري�...

 

 

غرب إفريقيا

غرب أفريقيامعلومات عامةجزء من إفريقيا القارة إفريقيا تقع في منطقة تضاريس إفريقيا الإحداثيات 12°N 3°E / 12°N 3°E / 12; 3 يشترك في الحدود مع شمال إفريقياوسط أفريقياالمحيط الأطلسي يدرسه West African studies (en) لديه جزء أو أجزاء بنين[1]بوركينا فاسو[1]الرأس الأخضر[1] تعد�...

Swiss 1.2-metre Leonhard Euler Telescope

Leonhard Euler TelescopeThe enclosure of the Leonhard Euler Telescope with the higher situated New Technology Telescope in the backgroundAlternative namesSwiss 1.2-m Leonhard Euler Telescope Named afterLeonhard Euler Part ofLa Silla Observatory Location(s)Norte ChicoCoordinates29°15′34″S 70°43′59″W / 29.2594°S 70.7331°W / -29.2594; -70.7331 OrganizationGeneva Observatory First light12 April 1998 Telescope stylereflect...

 

 

Place du Tertre

Square in Paris, France This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Place du Tertre – news · newspapers · books · scholar · JSTOR (August 2010) (Learn how and when to remove this template message) Night life at Place du Tertre. The Place du Tertre is a square in the 18th arrondissement of Paris, France. ...

 

 

USS Dewey (DDG-105)

Guided missile destroyer in the United States Navy For other ships with the same name, see USS Dewey. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: USS Dewey DDG-105 – news · newspapers · books · scholar · JSTOR (December 2022) (Learn how and when to remove this template message) USS Dewey on 24 Septe...

Elections in Louisiana

Election system in the American state of Louisiana Elections in Louisiana Federal government Presidential elections 1812 1816 1820 1824 1828 1832 1836 1840 1844 1848 1852 1856 1860 1864 1868 1872 1876 1880 1884 1888 1892 1896 1900 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020 2024 Presidential primaries Democratic 2000 2004 2008 2012 2016 2020 Republican 2004 2008 2012 2016 2020 U.S. Senate...

 

 

Flying Cloud (clipper)

Clipper Flying Cloud 1917 oil-on-canvas painting of Flying Cloud by Antonio Jacobsen, based on an 1851 lithograph History United States OwnerGrinnell, Minturn & Co, New York BuilderDonald McKay of East Boston, Massachusetts Cost$90,000 Launched1851 United Kingdom OwnerJames Baines & Co., Black Ball Line, Liverpool Acquired1862 OwnerHarry Smith Edwards, South Shields, England Acquired19 April 1871 Out of service1875 FateWent aground, Beacon Island Bar, Saint John, New Brunswick, 1874; ...

 

 

Orders, decorations, and medals of the Holy See

Papal Orders and decoration of merit of the Holy See Not to be confused with Holy orders in the Catholic Church. You can help expand this article with text translated from the corresponding article in German. (January 2016) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy...

Penghargaan Filmfare ke-39

Penghargaan Filmfare ke-39Tanggal1994SorotanFilm TerbaikHum Hain Rahi Pyaar KeKritikus TerbaikKabhi Haan Kabhi NaaPenghargaan terbanyakBaazigarDamini (4)Nominasi terbanyakKhalnayak (11) ← ke-38 Penghargaan Filmfare ke-40 → Penghargaan Filmfare ke-39 diadakan pada tahun 1994. Film Baazigar mendominasi malam itu. Hum Hain Rahi Pyaar Ke dari Mahesh Bhatt dinobatkan sebagai film terbaik tahun ini. Shah Rukh Khan memenangkan penghargaan Aktor Terbaik pertamanya untuk perannya...

 

 

Gary Thurman

American baseball player (born 1964) Baseball player Gary ThurmanOutfielderBorn: (1964-11-12) November 12, 1964 (age 59)Indianapolis, Indiana, U.S.Batted: RightThrew: RightMLB debutAugust 30, 1987, for the Kansas City RoyalsLast MLB appearanceMay 26, 1997, for the New York MetsMLB statisticsBatting average.243Home runs2Runs batted in64 Teams Kansas City Royals (1987–1992) Detroit Tigers (1993) Seattle Mariners (1995) New York Mets (1997) Gary Montez Thurma...

 

 

Набедренник (облачение)

У этого термина существуют и другие значения, см. Набедренники. Набедренник из черного шелка (начало XX в.). Происходит из ризницы Большой церкви Зимнего дворца Набе́дренник — принадлежность богослужебного облачения православного священника русской традиции. Содер...

Quenton Jackson

American basketball player Quenton JacksonJackson with the Washington Wizards in 2023No. 29 – Indiana PacersPositionShooting guardLeagueNBAPersonal informationBorn (1998-09-15) September 15, 1998 (age 25)Los Angeles, California, U.S.Listed height6 ft 5 in (1.96 m)Listed weight173 lb (78 kg)Career informationHigh schoolMira Costa(Manhattan Beach, California)College College of Central Florida (2017–2019) Texas A&M (2019–2022) NBA draft2022: undraf...

 

 

Hugh Edwin Munroe

Canadian politician The HonourableHugh Edwin MunroeOBEHugh Edwin Munroe during his time as Lieutenant Governor of Saskatchewan.5th Lieutenant Governor of SaskatchewanIn officeMarch 31, 1931 – September 10, 1936MonarchsGeorge VEdward VIIIGovernors GeneralThe Earl of WillingdonThe Earl of BessboroughThe Lord TweedsmuirPremierJ.T.M. AndersonJames G. GardinerWilliam John PattersonPreceded byHenry William NewlandsSucceeded byArchibald Peter McNab Personal detailsBorn(1878-05-31)May ...

 

 

Большая гавайская древесница

† Большая гавайская древесница Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:За...

Mount Tarawera

Volcano in New Zealand Mount TaraweraFissure formed during the 1886 eruptionHighest pointElevation1,111[1] m (3,645 ft)Coordinates38°13′00″S 176°31′00″E / 38.21667°S 176.51667°E / -38.21667; 176.51667GeographyMount TaraweraNorth Island, New ZealandShow map of New ZealandMount TaraweraMount Tarawera (North Island)Show map of North Island GeologyAge of rock21,900 yearsMountain typeLava dome with fissure ventVolcanic arc/beltTaupō Volca...

 

 

Herbert Nitsch

Austrian freediver and world record holder Herbert NitschBorn (1970-04-20) 20 April 1970 (age 54)AustriaOccupation(s)World Record Holder Free-diver and Air pilot This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.Find sources: Herbert Nitsch&...