Early Silurian Spore Tetrads from New York: Earliest New World Evidence for Vascular Plants?

Science  03 Sep 1971:
Vol. 173, Issue 4000, pp. 918-921
DOI: 10.1126/science.173.4000.918


Several taxa of abundant cutinized trilete spores from earliest Silurian shale in New York predate by almost an entire period vascular land plant megafossils. Paleoecological evidence suggests that these spores may represent vascular land or semiaquatic plants but a bryophytic origin cannot be precluded on the basis of spore characters. An algal origin is considered unlikely.