Fossilised Sharks in Blackheath?

Fossil Shark Teeth (Eocene) from the Blackheath Beds by flickr user RATAEDL
These are a wonderful selection of shark teeth, from the Eocene epoch, dug up from the Blackheath Beds. Not Beaumont Beds (that’s in Lewisham), but according to the 1911 Encyclopaedia Britannica:

LONDON CLAY, in geology, the most important member of the Lower Eocene strata in the south of England. It is well developed in the London basin, though not frequently exposed, partly because it is to a great extent covered by more recent gravels and partly because it is not often worked on a large scale. It is a stiff, tenacious, bluish clay that becomes brown on weathering, occasionally it becomes distinctly sandy, sometimes glauconitic, especially towards the top; large calcareous septarian concretions are common… The clay has been employed for making bricks, tiles and coarse pottery, but it is usually too tenacious for this purpose except in well-weathered or sandy portions. The base of the clay is very regularly indicated by a few inches of rounded flint pebbles with green and yellowish sand, parts of this layer being frequently cemented by carbonate of lime. The average thickness of the London Clay in the London basin is about 450 ft….. In the eastern part of the London basin in east Kent the pebbly basement bed becomes a thick deposit (60 ft.), forming part of the Oldhaven and Blackheath Beds.

Maybe they are Carcharhiniforme sharks?
Photo by flickr user RATAEDL

1 Comment

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One response to “Fossilised Sharks in Blackheath?

  1. Kate

    You can see the London Clay exposed on the Hammersmith foreshore at low tide, if you’re interested.

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