The long, thin grasslike leaves were attached directly to the stem and grew in a spiral along the trunk. Humans are destroying the Earth’s natural habitats at an alarming rate, and plant … Off the eastern coast of Australia one of the world's greatest natural wonders – the Great Barrier Reef – has been almost completely destroyed, with less than 2% of coral … Plant extinctions are shaking Earth’s green foundation. 2000 The Warty pig receives its name from the three pairs of fleshy "warts" present on the visage of the boar. Oddly enough, since the mass extinction of dinosaurs, pterosaurs and marine reptiles 65 million years ago, reptiles as a whole have fared relatively well in the extinction sweepstakes, inhabiting pretty much all the world's continents. By Duncan Geere. Mark's Cyanea Tree – Cyanea marksii (1900, Hawaiian Is.) But that's not to deny that some notable reptile species have vanished off the face of the earth, as witness our list ranging from … The Permian extinction was the worst mass extinction in the planet's history, obliterating up to 96% of marine species and similar numbers of land animals. More than one in five species on Earth now faces extinction, and that will rise to 50% by the end of the century unless urgent action is taken. The first signs of flowering plants are linked to this time as the evolution of the planet flourished. where it disappeared between 1926 and 1950 St. Helena Olive Tree 2003 • Saint Helena olive was a plant from the monotypic genus of flowering plants Nesiota within the family Rhamnaceae. By the end of the century, half of all species could be facing extinction. Most plant and animal species last around 10 million years before disappearing. They found that, between 1900 and 2018, seed plants were lost at a rate of about 25.6 extinctions per million species-years; in other words, an average of 2.3 species have gone extinct each year for the past 250 years. The Permian Geological Period ended – along with the Paleozoic Era – by a mass extinction event that erased 96% of marine species and 70% of terrestrial land species. Vascular Plants (ToL: Embryophytes [land plants]