 Examples of this second category are often referred to as “direct kind predications” while examples of the first are known as “characterizing generics”. (Direct kind predications are also known as D-generics (“D” for “definite”); characterizing generics are also known as I-generics (“I” for “indefinite”) (Krifka 1987).) It should be noted that the indefinite singular form on its standard interpretation cannot be used to express a direct kind predication: statements such as “a dinosaur is extinct” and “a tiger is widespread” are not felicitous. (They can of course be heard as felicitous if they are given a very different interpretation, so that their domain ranges over particular kinds—e.g., “a dinosaur, namely the T. rex, is extinct”—but this is not the relevant interpretation. To see the difference, consider statements involving kinds that do not themselves have salient subkinds, e.g., perhaps “a T. rex is extinct”.)