FOSSIL CHALK SPONGE - 80 million years old - Essex
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80 million years old
Boulder Clay (derived from the Chalk)
Saffron Walden, Essex
During the late Cretaceous period Britain was submerged beneath a tropical sea. On this sea floor was laid down white, limy mud, which became the familiar soft limestone we know as Chalk.
80 million years old
Boulder Clay (derived from the Chalk)
Saffron Walden, Essex
During the late Cretaceous period Britain was submerged beneath a tropical sea. On this sea floor was laid down white, limy mud, which became the familiar soft limestone we know as Chalk.
A small example of a fossil sponge from the Upper Chalk. Found in the boulder clay and brought to Essex from further north.
Click on a picture for a larger image
Click on a picture for a larger image
Size:approx. 6.5 x 5 x 4 centimetres
Weight: 85 grams
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