Spermatophyte plants that have unenclosed, "naked seeds": The fifth extant division is the flowering plants, also known as angiosperms or magnoliophytes, the largest and most diverse group of spermatophytes. Angiosperms possess seeds enclosed in a fruit, unlike gymnosperms. In addition to the taxa listed above, the fossil record contains evidence of many extinct taxa of seed plants. The so-called "seed ferns" (Pteridospermae) were one of the earliest successful groups of land plants, and forests dominated by seed ferns were prevalent in the late Paleozoic. "Glossopteris" was the most prominent tree genus in the ancient southern supercontinent of Gondwana during the Permian
Naked short selling naked short selling. In 2008, SEC chairman Christopher Cox said that the SEC "has zero tolerance for abusive naked short-selling" while implementing new regulations to prohibit the practice, culminating in the September 2008 action following the failures of Bear Stearns and Lehman Brothers amidst speculation that naked short selling had played a contributory role. Cox said that "the rule would be designed to ensure transparency in short-selling in general, beyond the practice of naked short-selling." As with the prevalence of naked shorting, the effects are contested. The SEC has stated that the practice can be beneficial in enhancing liquidity in