Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary ... now you don't" end to the dinosaurs implies ...

Termed the Cretaceous-Paleogene (also called the K-T and K-P) boundary, the post-impact Earth ... 66 million years later, formed a layer of sediment worldwide. The researchers from the University ...

formerly the Cretaceous-Tertiary (K-T) boundary. This geological signature consists of a thin layer of sediment found across the planet in both marine and terrestrial rocks; it is often identified ...