Location Details

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Building Name or Address

St John's Smith Square

Location of Geological Feature

Very good examples of fossilised oysters are preserved in large block on the south side of the Portico.

Description of geological feature

Portland Stone: Whitbed

Fossils

Oyster shell fragments

Rock Type

Limestone

Geological Age

Upper Jurassic

Quarry Location

Isle of Portland, Dorset, UK.

Category

Fossil

Nearest station

Westminster

Address

Smith Square SW1P 3HA

Building architect

Thomas Archer

Date of build

1728