A long-lost oceanic plate is diving deep into the mantle, dragging down the crust above, researchers say. However, the plate is also tearing apart below the Zagros Mountains in Iraq as it plunges ...

It is relatively common in shallow nearshore habitats throughout the Cretaceous. In Temnholectypus the periproct is separated from the peristome by more than two interambulacral plates. C. macrostomus ...