In stock
Stromatolite "Cotham Marble"
About 155 x 85 x 12mm
Réthien, Trias, Penerth group
Somerset , England
About 130 x 95 x 12mm
Solenopora jurassica
60 x 45 x 22 mm
Kimmeridgian
Charente Maritime / France
90 x 55 x 30 mm
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Kerkoub
95 x 50 x 45mm
Often misrepresented as stromatolites, the Kerkoubs are concretions from geomicrobiological origin.
Lower Cretaceous
Sahara / Morocco
43 x 28 mm
46 x 27 mm
"Tsesite" (Desert writing)
90 x 80 x 21 mm
Stromatolite
100 x 40 x 50mm
Cretaceous
Peru
150 x 120 x 15mm