Extensive research on the rocks of the Karoo Supergroup has shown that this sequence. which contains an unsurpassed record of Permian-Jurassic tetrapods. records a largely unbroken stratigraphic succession from 300 Ma to 180 Ma. This Gondwanan succession was deposited in a changing environmental setting reflecting glacial marine through deltaic to fluvial and aeolian desert conditions. https://unitedssports.shop/product-category/bike-accessories-other-closeouts/