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CARBONIFEROUS ONCOLITE - 330 million years old - Northumberland

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Home > FOSSILS > FOSSILS FROM THE PRECAMBRIAN AND PALAEOZOIC ERAS

CARBONIFEROUS ONCOLITE

Cut and polished to reveal the internal structure

330 million years old
(Carboniferous period)


Spittal, near Berwick-upon-Tweed, Northumberland

Near spherical nodule known as an ‘oncolite’ from an algal band in the Carboniferous Limestone. It has been cut in half and polished.

Oncolites are spherical structures formed by the growth of cyanobacteria (also known as blue-green algae). They are very similar to stromatolites but instead of being dome-shaped, they form spherical nodules. They usually form around a nucleus such as a fragment of shell.

 
Click on a picture for a larger image

Size: 5.5 centimetres diameter (approx.)
Weight: 220 grams (approx. weight of both halves)

Price for both halves:

PRICE: £34.00
Sorry, this item has been sold or is out of stock
CARBONIFEROUS ONCOLITE  - 330 million years old - Northumberland
CARBONIFEROUS ONCOLITE  - 330 million years old - Northumberland CARBONIFEROUS ONCOLITE  - 330 million years old - Northumberland CARBONIFEROUS ONCOLITE  - 330 million years old - Northumberland CARBONIFEROUS ONCOLITE  - 330 million years old - Northumberland