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Chapter 2: The Doldrum years (1900–1953)
Thoughtfully placed drawings and charts
Kronosaurus queenslandicus
etheridgei is interpreted to have inhabited shallower marine waters based on its depositional environment
Collectible Archaeocyatha guitar picks Australian animals Chapter 2: The Doldrum yearsThese unique guitar picks are crafted from Archaeocyatha fossils found near Andamooka, South Australia, within the Cambrian aged Andamooka Limestone (538486 million years ago). Archaeocyaths were the worlds first reef building animals, thriving in warm, shallow seas. Their distinctive porous, double walled cone shaped skeletons formed some of Earths earliest reef ecosystems before most species went extinct by the Middle Cambrian. Size Varies between