Pleuroctenium - Pleuroctenium

Pleuroctenium
Vaqtinchalik diapazon: erta O'rta Kembriy (Amgayyan - Mayya)
Pleuroctenium granulatum.JPG
P. granulatum
Ilmiy tasnif
Qirollik:
Animalia
Filum:
Artropoda
Sinf:
Trilobita
Buyurtma:
Agnostida
Suborder:
Agnostina
Superfamily:
Kondilopigoida
Oila:
Kondilopigida
Tur:
Pleuroctenium

Xavl va Korda, 1847[1]
turlari
  • P. granulatum (Barrand, 1846) (turi ) sinonimlar Battus granulatus, Agnostus granulatus, Dichagnostus granulatus
    • P. granulatum granulatum
    • P. granulatum pileatum Rushton, 1966 yil
    • P. granulatum scanense Vestergard, 1946 yil
  • P. bifurcatum (Illing, 1916)
  • P. magnificum Xauell, 1936 yil
  • P. tuberculatum (Illing, 1916)
Sinonimlar

Dichagnostus

Pleuroctenium agnostiddir trilobit Condylopygidae oilasiga mansub. Jins O'rta kembriy (Drumian ) Kanada qatlamlari (Nyufaundlend va Nyu-Brunsvik), Chexiya, Angliya va Uels, Frantsiya va Shvetsiya.

Tur turlari

1925 yilda Vogdes tomonidan belgilanishi bilan, Battus granulatus Barrande, 1846, 15-bet. [2], Bohemiyaning O'rta Kembriyasidan.

Lektotip: Praga milliy muzeyi, koll. Barrande, ko'ch. 250, № 1008; figurali Barrand (1852, 49-rasm, 5-rasm) [3] va Šnadjr (1958, 2-bet, 5-rasm). Skryje ko'rpa-to'shaklaridan (Jince Fmn.), Ekkaparadoksidlar pusillus Zona, Tyhovice, Bohemiya.

Tashxis

(Rushtondan, 1966 y., 29-bet) [4] "In Pleuroctenium oldingi galabellar lob yarim oy shaklida va orqa gabellar lobga o'ralgan, pigidial o'qda diskret umurtqalar bor, chegaralar va chegara chiziqlar tor, uzun umurtqalar odatda rivojlangan va yuzasi odatda granulozdir. ". oksipital tasmada kondilopigoidlarning o'ziga xos xususiyati sifatida tan olingan (Rushton, op. keltirish.).

Tarqatish

  • P. granulatum granulatum Barrand (1846) Kanadaning O'rta Kembriyasidan (Mavddachitlar xiksi [5] Manuels daryosi shakllanish zonasi, Janubi-Sharqiy Nyufaundlend), Chexiya (Skrye Shalesning yuqori darajalari, Jince formasyoni, Skryye-Tyovice hududi), "Paradoksidlar avrorasi" Zonasining yuqori qismiga Mavddachitlar xiksi Abbey slanetsining shakllanishi zonasi, Angliya markazidagi Nuneaton [1] va pastki qismidan Tomagnostus fissus Port-y-rhaw guruhidagi biozona, pastki Menevia Formation [6] Dwrhyd shahridan, Nine Wells, St David's, SW Wales. Riz va boshqalarning Whitesands Bay Formation (Porth-y-rhaw guruhining eng past litostratigrafik bo'linmasi). (op. cit., S. 72) shartli ravishda biozonaga tegishli "Paradoksidlar avrorasi" Tuzli [7] [8], Xiks (1881) dan keyin. [9] Biroq, bu tur ehtimol kichik sub'ektiv sinonimdir Mawddachites hicksiiva shuning uchun mustaqil emas avrora Biozone tan olinishi mumkin.
  • P. granulatum scanense Westergard, 1946 (35-bet, 1-rasm, 8-11-rasm va 2-rasm, 14-17-rasmlar) [10] Sefalonning holotipi Vestergard tomonidan ishlab chiqilgan (op. ko'chirish., pl. 2, 14-rasm); dan Gipagnostus parvifronlari Biozone, Andrarum, Scania). Kichik turlari, shuningdek, Menevia Formation-dan qayd etilgan (Drumian Porth-y-rhaw, Sent-Devid yarim oroli, SW Uels, Locs. Rees-ning OE-1 va PR-4 va boshq., (op. ko'chirish p. 26, 1.17-rasm va p. 26, mos ravishda 1.18-rasm).
  • P. granulatum tuberculatum (Illing 1916, 421-bet, 33-rasm, 4-8-rasmlar). Lektotip, SM A53055, Illing (1916) anjirida ko'rsatilgan namunadir. Pl.33 ning 7-qismi; Rushton tomonidan tanlangan va qayta tasvirlangan (1979, 48-bet, 2H-rasm) [11]; Abbey slanets shakllanishidan, Hartshill Xeys, Nuneaton, T. fissus Biozona (ufq D3). Shuningdek, H. parvifrons Biozone, SW Uelsda Meneviya shakllanishi, Rees of Loc PR-4 va boshq., (op. keltirish.) va dan Mawddachites hicksii Zonasi va pastki qismi P. davidis Nyufaundlendning janubi-sharqidagi Manuels daryosi shakllanish zonasi (Xatchinson 1962).
  • P. granulatum pileatum (Rushton 1966, 33-bet, 4-rasm, shakl 18 a-c), Purley Slanetsdan (taxminan 650 'asosdan yuqorida), Akkadoparadoksidlarmi? pinus Kemp-Xill zonasi, Stokingford, Nuneyton, Uorvikshir, Angliya. [Eng yaqin ICS oralig'i: Kembriy 3 seriyasi - Terrenuv davri.
  • P. bifurcatum (Illing 1916, 421-bet, 33-rasm, 2,3-rasm). Lektotip - SM A456, Illing (1916), pl.33; Rushton tomonidan tanlangan va qayta tasvirlangan (1979, 48-bet, 2C-rasm). Dan Ptychagnostus punctuosus Biozone (ufq G3), Abbey Shale Formation, Hartshill Hayes. Bu tur, shuningdek, Nyu-Yorklendning eng yuqori qismida joylashgan Manuels daryosi shakllanishida uchraydi Paradoksidlar davidis Mintaqa. P. qarz bifircatum (sifatida keltirilgan P. bifurcatum) Port-y-rhavning Meneviya shakllanishidan qayd etilgan, SW Uels, Pt. punktuoz Biozone (Rees-ning PR-12 joyi va boshq. 2014, p. 27 & 1.18-rasm), va farq qiladi bifurkatum (s.s.) pygidiyadagi uchta tüberkülün ikki qatorli etishmasligi. Rushton (1979, 49-bet), shuningdek, Illingning Abbey Shales gorizonti bo'lgan shubhali pigidiy fomusi haqida eslatib o'tdi. Pt. punktuoz Nuneaton-dagi biozona, u erda o'qda ikki qatorli sil kasali yo'q, ammo aksi bilan P. bifurcatum.

Adabiyotlar

  1. ^ a b Fatka, O .; Herink J.; Najman, P. (2004). "Skryje-Tyovice hududidagi agnostid trilobitlarning yangi topilmalari (O'rta Kambriyen, Barrandiya maydoni, Chexiya)" (PDF). Chexiya Geologiya Jamiyati jurnali. 49 (1–2): 75–81.
  2. ^ BARRANDE, J. 1846. Blimdan oldin ilm-fanga oid xabarnoma Áme silurien et les trilobites de Bohême. Leypsig, 97 bet.
  3. ^ BARRANDE, J. 1852 yil. Bohême Systême Silurien du centre. Ière partie. Péontologiques-ni qayta ko'rib chiqadi, Jild I. Qisqichbaqasimonlar, trilobitlar. Praga va Parij, xxx + 935 bet.)
  4. ^ RUSHTON, A. W. A. ​​1966. Uorvikshirning Purley Shalesidan olingan kembriy trilobitlari. Paleontogr. Soc. Monogr. 120: 1-55).
  5. ^ FLETCHER, T. P., 2007: Kembriy seriyasidagi "Paradoxides hicksii" va "Paradoxides davidis" zonalarini o'zaro bog'lash. Australasian Paleeontologists Assotsiatsiyasining xotiralari 33, 35 - 56.
  6. ^ REES, A. J., THOMAS, A. T., LEWIS, M., HUGHES, H. E. & TURNER, P. 2014. SW Uelsning kembri: Birlashgan Avalonian Stratigraphy tomon. Geologik Jamiyat, London, Xotiralar, 42, 1-30.
  7. ^ SALTER, J. W., 1869. Kvart. Sayohat. Geol. Soc., Vol. 25, p. 54, pl. 2, shakl. 2018-04-02 121 2.
  8. ^ LAKE, P. 1935. p. 212, pl. 30, anjir. 1 + 5.
  9. ^ HIKS, H. 1881. Britaniya orollarining eozoy va quyi paleozoy jinslari klassifikatsiyasi. Ommaviy ilmiy sharh, 5, 289-308.
  10. ^ WESTERGÄRD, A. H. 1946. Shvetsiyaning O'rta kembriyasi Agnostidea. Sveriges Geologiska Untersokning, Avhandlingar S seriyasi yo'q. 526.
  11. ^ RUSHTON, A. W. A. ​​1979. Abbey Shales (Angliya) dan O'rta Kembriya Agnostidasini ko'rib chiqish. Alcheringa 3: 43-61.