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drospirenone and ethinyl estradiol generic The Red List now contains assessments of 71,500 species, including all mammals, birds and amphibians. The latest update added more than 1,000 species. Of the species understood well enough for a judgment to be made, more than a third are under threat. About half of known reptiles have been assessed and a third of fish, but only a fraction of invertebrates, plants and fungi.