With the origin of pollination in ancient seed plants, the male gametophyte (“pollen”) began
to evolve a new and unique life history stage, the progamic phase, a post-pollination period …

Pseudoasterophyllites cretaceus from the Cenomanian of Bohemia was recently recognized
as an angiosperm by association with stamens containing monosulcate pollen of the …

The pinnately lobed Aptian leaf fossil Mesodescolea plicata was originally described as a
cycad, but new evidence from cuticle structure suggests that it is an angiosperm. Here we …

Abstract The Lower Cretaceous Yixian Formation in northeastern China has shed unique
light on the early evolution of angiosperms, including Chaoyangia, Archaefructus …

In stark contrast to the multitude of hypotheses on carpel evolution, there is little fossil
evidence testing these hypotheses. The recent discovery of angiosperms from the Early …

Early Cretaceous floras containing angiosperms were described from several geographic
areas, nearly from the Arctic to the Antarctic, and are crucial to understand their evolution …

The presence of a gynoecium composed of carpels is a key feature of angiosperms. The
carpel is often regarded as a homologue of the gymnosperm megasporophyll (that is, an …

Angiosperms distinguish themselves from gymnosperms by their ovules that are enclosed
before pollination. However, how the ovules get enclosed in angiosperms remains a …

Bactris is a Neotropical genus of high floristic importance, which needs morphological data
to support the construction of a correct infrageneric classification. In this research, the …

Throughout the evolution of the angiosperm flower, developmental innovations have
enabled the modification or elaboration of novel floral organs enabling subsequent …