Product Title: Fossil Urchin Madagascar
Origin: Tulear, Madagascar
Geographic Age: 200-145 Million Years
As larva they swim freely, but as soon as the round skeleton is formed the urchin stays at the bottom.
They move slowly across the bottom of the ocean feeding mostly on algae.
Their rigid skeletal system has interlocking plates known as a test. On the top of their bodies are five paired rows of their endoskeleton and they form in star shaped pattern.
Size approximately: 21mm x 10mm
Size approximately: 29mm x 13mm
We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.