Very Rare Scylla serrata Fossil Crab from Australia

Scylla serrata, often called mud crab or mangrove crab, is a thriving genus alive and well today. These crabs are highly cannibalistic in nature and when another crab undergoes molting the hard-shelled ones attack the molting crabs and devour them. The females can give birth to 1 million offspring, which can grow up to 3.5 kg in size and have a shell width of up to 24 cm wide.
In 2008 and 2009 I had the unique privilege of purchasing four large lots from a most important collection. The collector had painstakingly accumulated a superb group of decapods, echinoderms and other fossils during a twenty-year period. The vast majority of the specimens came from self-collecting, academic resources, trading, and selected purchases. Very few of fossils came from the normal channels of trade shows and commercial internet resources. Any specimen presented under this introductory paragraph will generally be a superior collector grade fossil; be it of rarity, preservation, or, both.