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Examples of some of the Llandovery (lower Silurian) graptolites found in south-west Scotland.

  • a Monograptus sedgwickii (Porrlock) —sedgwickii Biozone.
  • b Pristiogmptus regularis (Tornquist) —chiefly sedgwickii Biozone.
  • c Diversograptus' runcinatus (Lapworth) —lower turriculatus Biozone.
  • d Monograptus turriculatus (Barrande) — turriculatus Biozone to lower crispus Biozone.
  • e Monograptus discus (Tornquist) — crispus to crenulata biozones.
  • f Monograptus crispus Lapworth — crispus Biozone.
  • g Streptograptus exiguus (Nicholson) —uppermost turriculatus Biozone to griestoniensis Biozone.
  • h Monograptus convolutes (Hisinger) —convolutus Biozone.
  • i Dimorphograptus swanstoni Lapworth — acinaces Biozone.
  • j Coronograptus gregarius (Lapworth) typhus to convolutus biozones.
  • k Monograptus limatztlusTOrnquist —chiefly convolutus Biozone.
  • l Monograptus triangulatus fimbriatus (Nicholson) — magnus Biozone.
  • m Cephalograptus cometa (Geinitz) — upper convolutus Biozone.
  • n Monograptus priodon (Bronn) — griestoniensis Biozone? to lower Wenlock.
  • o Parakidograprus acuminates (Nicholson)acunzinatus Biozone.
  • p Climacograptus trifilis Manck — acuminatus Biozone.
  • q Rhaphidograptus toernquisti (Tornquist) top atavus to basal sedgwickii biozones.
  • r Atavograptus atavus (Jones) cheifly atavus to cyphus biozones.
  • s Rastrites longispinus Perner — triangulatus ro convolutus biozones.
  • t Monograptus triangulatus triangulatus (Harkness) — triangulatus Biozone.

Figure 60 from: Stone, P (editor). 1996. Geology in south-west Scotland: an excursion guide. Keyworth, Nottingham: British Geological Survey.

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current12:50, 4 April 2015Thumbnail for version as of 12:50, 4 April 20151,356 × 2,169 (358 KB)Scotfot (talk | contribs)Examples of some of the Llandovery (lower Silurian) graptolites found in south-west Scotland, all about twice natural size. * a ''Monograptus sedgwickii ''(Porrlock) ''—''''sedgwickii ''Biozone. * b ''Pristiogmptus regularis ''(Tornquist) —chiefly...
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