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Vinnels - Ludlow


Wenlock Limestone - Wenlock


Stockdale Beck - Llandovery

Silurian

GEOGRAPHY AND CLIMATE: North America and Eurasia join to form Caledonian Mountains, Continents flooded by shallow seas, limestone deposited.

TERRESTRIAL ANIMAL LIFE: Scorpions, Millipedes and possibly Eurypterid's come out of the water.

PLANT LIFE: Primitive psilopsid plants live at edges of water.

SEA LIFE: Marine invertebrates, Crinoids, Brachiopods, Trilobites, Nautiloids and Graptoites. Reefs built by tabulate Corals, Eurypterid's in brackish waters, Fish become abundant in seas and fresh waters.

British Stratification Tables
Updated and correct from 2004 MYA=Million Years Ago from present


Silurianfishes by Joseph Smit (1836-1929) from Nebula to Man 1905 England

Ludlow
419 - 421 MYA
Ludfordian Cefn Einion Formation Upper Whitcliffe Group  
Sandstone Series Marloes Sands
Knucklas Castle Formation Lower Whitcliffe Group  
Upper Leintwardine Group  
Bailey Hill Formation Lower Leintwardine Group  
Upper Elton Group Mortimer Forest
Oakley Mynd Formation Middle Elton Group

Vinnels
Mortimer Forest
Upper Millichope

Lower Elton Group

Vinnels
Mortimer Forest
Upper Millichope


Wenlock
423 - 426 MYA
Homerian Much Wenlock Formation Edgton Member Wenlock Limestone

Wenlock Edge
Wenlock Quarry
Shadwell Quarry
Mortimer Forest

Longville Member Tickwood Beds  
Coralliferous Series Marloes Sands
Gray Sandstone Group Freshwater East
Henshaw Formation Pentland Hills
Aston Mudstone Formation Edgton Limestone Member  
Coalbrookdale Formation Farley Member Wenlock Shales  
Sheinwoodian Bromleys Mill Shale Formation    
Coalbrookdale Formation Apedale Wenlock Shales  
Henshaw Formation Pentland Hills
Wether Law Linn Formation Pentland Hills
Buildwas Formation Wenlock Shales  

Llandovery
428 - 443 MYA
Telychian Cock Rig Formation Pentland Hills
Wether Law Linn Formation Pentland Hills
Deerhope Formation Pentland Hills
Upper Brathy Flag Formation Turriculatus Zone Stockdale Beck
Grispus Zone
Aeronian Lower Brathy Flag Formation Red Beds Stockdale Beck
Green Beds
Hughley Shales The Onny Trail
Pentamerus beds

Hillend
The Onny Trail

Rhuddanian Browgill Beds Centrifugus Zone

Stockdale Beck
Coniston Area
Murchisoni Zone
Riccartonensis Zone
Woodland Formation Woodland Bay
Moffat Shales Gala Greywackes Dob's Linn
Birkhill Shales
Skelgill Beds   Stockdale Beck


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