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Graptolites - Silurian composite scene




Halkiera




Hallucigenia ‘debate’




How trilobites lived




Margaretia dorus (frond-like algae)





   
Graptolites - Silurian composite scene

Graptolites - Silurian composite scene  (c) John Sibbick
click to enlarge


Image no:  IC22

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