Flora End-Triassic extinction There is no evidence of a mass extinction of plants at the Triassic–Jurassic boundary. At the Triassic–Jurassic boundary in Greenland, the sporomorph (pollen and spores) record suggests a complete floral turnover. An analysis of macrofossil floral communities in Europe suggests that changes were mainly due to local ecological succession. At the end of the Triassic, the Peltaspermaceae became extinct in most parts of the world, with Lepidopteris persisting into the Early Jurassic in Patagonia. Dicroidium, a corystosperm seed fern that was a dominant part of Gondwanan floral communities during the Triassic, also declined at the Triassic–Jurassic boundary, surviving as a relict in Antarctica into the Early Jurassic.
flora end-triassic extinction there is no evidence of a mass extinction of plants at the triassic–jurassic boundary at the triassic–jurassic boundary in greenland the sporomorph (pollen and spores) record suggests a complete floral turnover an analysis of macrofossil floral communities in europe suggests that changes were mainly due to local ecological succession at the end of the triassic the peltaspermaceae became extinct in most parts of the world with lepidopteris persisting into the early jurassic in patagonia dicroidium a corystosperm seed fern that was a dominant part of gondwanan floral communities during the triassic also declined at the triassic–jurassic boundary surviving as a relict in antarctica into the early jurassic