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Journal Article

Evidence of Simple Polyembryony in Permian Seeds from Antarctica

Edith L. Smoot and Thomas N. Taylor
American Journal of Botany
Vol. 73, No. 7 (Jul., 1986), pp. 1079-1081
Stable URL: http://www.jstor.org/stable/2444126
Page Count: 3
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Evidence of Simple Polyembryony in Permian Seeds from Antarctica
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Abstract

Well-preserved seeds with multiple embryos are described from the Permian of the Beardmore Glacier region, Antarctica. The seeds are platyspermic, winged and contain two archegonia in the micropylar end. Each archegonium contains an undifferentiated, multicellular embryo at a comparable stage of development. Attached to one end of each embryo is an elongate structure similar to the suspensor in extant gymnosperms. This discovery represents the earliest example of simple polyembryony yet recorded from the fossil record.

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