22. 
Although reworked shells of extinct organisms are not uncommon 
in cores containing graded sand layers of Pleistocene or Recent age, there 
is good evidence that the sediments in these 40 cores are undisturbed and 
in the place of original deposition. 
For conclusions based on the occurrence of these older sediments 
see "Turbidity Currents and Sediments in the North Atlantic", Ericson, 
Ewing, Heezen, 1952, Am, Assoc, Petrol, Geol, Bull,, vol. 36, pp. 
489-511, 
Dr. Alfred R. Loeblich, Jr., Associate Curator, Division of 
Invertebrate Paleontology and Paleobotany, Smithsonian Institute, 
U.S. National Museum, is describing for publication the Lower Greta- 
ceous foraminifera in a core, Al67-25, from the Blake Plateau, 
