These are my recommendations for stromatolites to include in your museum display.
All of the photos would not fit into this email. I may have to send several.
Two are from Bolivia I would choose 1 of them. One photo is mislabeled as from Brazil. They about 2.5 billion years old. The sphere is $60.00 the slab is $40.00
One is a stromatolite from California in the US. The stromatolites are the dark black circles. These are Oncolytic Stromatolites -Early Cambrian Period about 550 million years old $40.00
2 photos are the same piece from Morocco. rough except for the bottom which has been cut flat to show the layers. Ediacarin age-about 600 million years old. $80.00
2 photos are the same piece from Wyoming, USA. rough except for the bottom and 1 side which has been cut flat to show the layers. Proterozoic-about 1.7 million years old. $90.00
Stromatolite 1 is a stromatolite with one side polished. I don't know where it is from or its age. $30.00
Last is a piece of butterstone. Not a stromatolite but has fossilized cyanobacteria, about 2.5 billion years old from South Africa. $15.00
Shipping cost will be around $100. I won't know the exact amount until you choose the pieces you want and I can weigh it out.
Stromatolite slab from Bolivia
Stromatolite sphere Bolivia
Moroccan stromatolite with cut base
wyoming stromatolite with cut base
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Geologic Time Geologic Time LineProterozoic Era