South American Stromatolites - Pucalithus sp 
​These have been recently reclassified as Maastrichtian stage (Cretaceous). For many years they were classified as Precambrian.  To keep up with the latest research and scientific progress, I've updated this section.   Original scientific papers claiming they were Precambrian are now superseded by the latest information. 
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 Cut and Polished Slices of Precambrian Stromatolites from South America. Stromatolites are one of the earliest fossilized forms of life to be found. They are the result of the building process of sediments and cementations in shallow waters of cyanobacteria, or blue-green algae's.   These can be cut to display the layers that have been built up over years and years, in the same way a tree is cut to show its growth rings.   Seasonal changes may have slowed down growth or totally the opposite and this can be seen in the varying thickness of layers and different mineral content of each layer over time.    Stromatolites can still be found today in places such as Shark Bay in Australia.

The specimens you see below all come from the Maastrichtian El Molino Formation, S. Cochabamba, Bolivia, S. America.   These are colonial Stromatolites.    They are dated to 70 Million years old.  They are still incredibly old.  

Best Grade Cut and Polished Stromatolite Slices from Bolivia

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Polished Stromatolite Slice 3

£24.99 £19.99
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Polished Stromatolite Slice 17

£28.99 £23.19
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Polished Stromatolite Slice 18

£15.99 £12.79
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Polished Stromatolite Slice 132

£22.99 £18.39
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Polished Stromatolite Slice 133

£22.99 £18.39
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Polished Stromatolite Slice 149

£22.99 £18.39
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Polished Stromatolite Slice 151

£16.99 £13.59
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Polished Stromatolite Slice 152

£18.99 £15.19
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Polished Stromatolite Slice 156

£12.99 £10.39
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Polished Stromatolite Slice 160

£22.99 £18.39
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Polished Stromatolite Slice 162

£21.99 £17.59
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Polished Stromatolite Slice 171

£15.99 £12.79
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Polished Stromatolite Slice 172

£19.99 £15.99
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Polished Stromatolite Slice 174

£15.99 £12.79
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Polished Stromatolite Slice 176

£15.99 £12.79
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Polished Stromatolite Slice 177

£16.99 £13.59
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Sand "Stromatolite" Desert Onion Concretion 77

£16.99
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Sand "Stromatolite" Desert Onion Concretion 78

£16.99
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Sand "Stromatolite" Desert Onion Concretion 79

£15.99
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Sand "Stromatolite" Desert Onion Concretion 80

£16.99
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Sand "Stromatolite" Desert Onion Concretion 81

£16.99
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Sand "Stromatolite" Desert Onion Concretion 82

£15.99
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Sand "Stromatolite" Desert Onion Concretion 83

£15.99
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Sand "Stromatolite" Desert Onion Concretion 84

£15.99
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Sand "Stromatolite" Desert Onion Concretion 86

£17.99
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Sand "Stromatolite" Desert Onion Concretion 87

£16.99
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Sand "Stromatolite" Desert Onion Concretion 88

£19.99
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Australian Tiger Iron Slices
Precambrian age Tiger Iron Stromatolites from Western Australia.  Banded Iron hematite replaced colonial Stromatolites.  These are highly polished top grade specimens.  They look amazing in real life far better than any picture can show!

Yellow Tiger Iron Polished Slice Western Australia 126

£8.99
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Yellow Tiger Iron Polished Slice Western Australia 128

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 132

£13.99
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Yellow Tiger Iron Polished Slice Western Australia 135

£14.99
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Yellow Tiger Iron Polished Slice Western Australia 137

£12.99
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Yellow Tiger Iron Polished Slice Western Australia 140

£11.99
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Yellow Tiger Iron Polished Slice Western Australia 142

£12.99
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Yellow Tiger Iron Polished Slice Western Australia 144

£9.99
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Red Tiger Iron Polished Slice Western Australia 153

£14.99
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Red Tiger Iron Polished Slice Western Australia 156

£15.99

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Red Tiger Iron Polished Slice Western Australia 165

£11.99
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Red Tiger Iron Polished Slice Western Australia 167

£13.99
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Red Tiger Iron Polished Slice Western Australia 168

£15.99
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Red Tiger Iron Polished Slice Western Australia 171

£11.99
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Yellow Tiger Iron Polished Slice Western Australia 71

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 72

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 73

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 74

£8.99
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Yellow Tiger Iron Polished Slice Western Australia 75

£8.99
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Yellow Tiger Iron Polished Slice Western Australia 76

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 77

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 78

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 79

£7.99
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Yellow Tiger Iron Polished Slice Western Australia 80

£8.99

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Red Tiger Iron Polished Slice Western Australia 81

£5.99
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Red Tiger Iron Polished Slice Western Australia 82

£9.99

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Red Tiger Iron Polished Slice Western Australia 83

£8.99
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Red Tiger Iron Polished Slice Western Australia 84

£9.99
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Red Tiger Iron Polished Slice Western Australia 85

£7.99
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Red Tiger Iron Polished Slice Western Australia 86

£8.99
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Red Tiger Iron Polished Slice Western Australia 87

£7.99
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Red Tiger Iron Polished Slice Western Australia 89

£8.99
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Red Tiger Iron Polished Slice Western Australia 90

£11.99
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Red Tiger Iron Polished Slice Western Australia 91

£17.99
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Blue Tiger Iron Polished Slice Western Australia 65

£18.99
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Blue Tiger Iron Polished Slice Western Australia 66

£17.99
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Blue Tiger Iron Polished Slice Western Australia 67

£7.99
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Blue Tiger Iron Polished Slice Western Australia 68

£7.99
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Blue Tiger Iron Polished Slice Western Australia 69

£7.99
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Blue Tiger Iron Polished Slice Western Australia 70

£17.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 51

£21.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 52

£17.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 53

£24.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 54

£17.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 55

£21.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 56

£21.99

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"Marra Mamba" Tiger Iron Polished Slice Western Australia 56

£21.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 57

£24.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 58

£17.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 59

£24.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 60

£17.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 61

£24.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 62

£21.99
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"Marra Mamba" Tiger Iron Polished Slice Western Australia 63

£21.99
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