[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
New Flower from China: Archaefructaceae and A. sinensis n. sp.
Sun G.; Ji Q.; Dilcher, D.L.; Zheng S.-l.; Nixon, K.C.; Wang X.-f. 2002.
Archaefructaceae, a new basal angiosperm family. _Science_ 296: 899-
"Archaefructaceae is proposed as a new basal angiosperm family of
herbaceous aquatic plants. This family consists of the fossils
Archaefructus liaoningensis and A. sinensis sp. nov. Complete plants from
roots to fertile shoots are known. Their age is a minimum of 124.6 million
years from the Yixian Formation, Liaoning, China. They are a sister clade
to all angiosperms when their characters are included in a combined
three-gene molecular and morphological analysis. Their reproductive axes
lack petals and sepals and bear stamens in pairs below conduplicate
Stokstad, E. 2002. Fossil plant hints how first flowers bloomed. _Science_
The new plants are found in much greater proliferation than the first
bud found, and include association with fish, suggesting they were aquatic
plants to begin with.
Jaime A. Headden
Little steps are often the hardest to take. We are too used to making leaps
in the face of adversity, that a simple skip is so hard to do. We should all
learn to walk soft, walk small, see the world around us rather than zoom by it.
Do You Yahoo!?
Yahoo! Health - your guide to health and wellness