31. The occurrence of planktonic foraminifera across the K Pg boundary has been studied since the 1930s. 32. He was an expert in the Tertiary of Washington State and specialized in biostratigraphy using Foraminifera . 33. Affected planktonic organisms will include pteropods, coccolithophorids and foraminifera , all important in the food chain. 34. Other prominent macrofauna found in the sediment are calcareous foraminifera , copepods, polychaetes, and bivalves. 35. In Paris, he worked on the classification of Alcide d'Orbigny's foraminifera collections. 36. The researchers found cold-water foraminifera in the same seabed strata as bigger concentrations of sand grains. 37. Some organisms, such as some foraminifera , test is always contained within a layer of living tissue. 38. Climate change during the last 65 million years as expressed by the oxygen isotope composition of benthic foraminifera . 39. The granular outer layer is brilliant yellow-orange with a rather darker interior carrying many symbiont foraminifera . 40. It has been found that foraminifera , ciliates and small copepods are the main diet of the worm.