420 



REPORT — 1895. 



Table II.— Showing the Geological Distribution and Vertical Range 



By Professor C. Lapworth, 



Comparative Nomenclature 



C. Stkata of the Thied Fauna. 



' Silurian' of SedgivicJt (Salopian), 

 (c') Ludhw Series (Upper Salopian) 

 (c) Upper Ludlow and Passage-Beds 

 (b) Aymestry Limestone . , . 

 {a) Lower Ludlow Shales . 



(C-) Wenloch Series (Middle Salopian) 

 (c) Wenlock Limestone 

 (J) Wenlock Shales 

 (a) Woolhope Beds 



(c') Llandovery Series (Lower Salopian) 

 (c) Tarannon Shales .... 

 (h) Mayhill or Upper Llandovery 

 (a) Lower Llandoverj' 



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B. Strata of the Second Fauna. 

 ' Ordoindan ' of Lapworth, ^'c. 

 (b') Bala or Carndoc Series (Upper Ordovician) 

 (&) Upper Bala, with Dicellorjraptus . 

 (a) Lower Bala, with IHcranograptus 



(B-) Llandeilo Series (Middle Ordovician) 



(fc) Upper Llandeilo, with Caniograptus (fraeilis 



(a) Lower Llandeilo, with Didymograptus Murcldsoni 



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(b') Arenig Series (Lower Ordovician) . 

 (J) Upper Division, with Plaeoparia 

 (a) Lower Division, with Plujllograptus 



A. Strata of the First Fauna. 

 ' Cambrian ' of Lyell. 

 (A') Olenidian or TJpjier Cambrian .... 

 (b) Tremadoo Beds with Dictyonema and Oleniis 

 (a) Lingula Flags (of Belt) .... 

 Upper or Dolgelly Beds with Splicer opMhalimis 

 Middle or Ffestiniog with Hymenoearis 

 Lower or Blaentwrog with Olenelhis truncatus 



(A^) Paradoxidian, or 3feiievian Series, or Middle Cam- 

 brian, n-ith Paradoxides Davidis, S)-c. 



(A') Tacnnian, or Olenelhis Zone, or Lower Cambrian, 

 with Olenelhis, Kutorgina, S)'c. 



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