Ontology highlight
ABSTRACT:
SUBMITTER: Wang D
PROVIDER: S-EPMC4448223 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
Scientific reports 20150529
Seed plants underwent first major evolutionary radiation in the Late Devonian (Famennian), as evidenced by the numerous ovules described to date. However, the early pollen organs are underrepresented, so that their structure and evolution remain poorly known. Here we report a new taxon of pollen organ Placotheca minuta from the Late Devonian. The synangium consists of many basally and more or less laterally fused microsporangia borne on the margin of a pad. The prepollen is spherical and trilete ...[more]