Abstract
Abstract Empty tests of a modern analog of Schizosporis reticulatus Cookson and Dettmann 1959 (Early to mid Cretaceous) were discovered in sediments from a small freshwater lake on the Stanford University campus. The ovoidal palynomorphs possess a complex wall that has a dense inner portion overlain by an outer portion of closely packed cell‐like units, an equatorial suture which extends along approximately 75% of the circumference, and a single pore in each cell. One hemisphere is distinguished by two elongate areas of larger and taller cells parallel to the greatest dimension of the specimen. Light microscopy, scanning electron microscopy, and study of serial thin sections provide the basis for comparison of the modern species of S. reticulatus. The biological affinity of the modern species has not yet been determined.
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