Culled by H. G. Lee from 500 mL (2 cupfuls) unsieved grunge from within larger shells taken from a renourishment site on Phipps Ocean Park Beach, Palm Beach, Palm Beach Co., FL by Carole Marshall in April, 2021 (1.77 mm. and 2.16 mm.). SEMs performed by Dr. Lee under the supervision of Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL.