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Graptolites - Silurian composite scene




Halkiera




Hallucigenia ‘debate’




How trilobites lived




Margaretia dorus (frond-like algae)





   
Margaretia dorus (frond-like algae)

Margaretia dorus (frond-like algae) (c) John Sibbick
click to enlarge


Image no:  IC9

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