BIZARRE CRETACEOUS FOSSIL OYSTER - 95 million years old - Madagascar
« backCRETACEOUS OYSTER
Rastellum
95 million years old
Marovoay, Madagascar
Rastellum is a genus of fossil bivalve of striking appearance that lived from the Middle Jurassic to the Upper Cretaceous. These oysters had a narrow-valved, tubular shell, which was composed of regularly alternating sharp ridges and deep folds.
This fossil is solidly preserved in calcite and has been partially polished
Click on a picture for a larger image
Size: approx 8 x 5 x 3.5 centimetres
Weight: 150 grams
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