Paleonet: Jurassic samaras (helicopter seeds)

[Steve Mcloughlin]

These are Pinaceae (conifer) winged seeds. They are rather common in the Daohugou (Jurassic) and Jehol (Early Cretaceous) biotas of China. You can find many illustrated examples of these, and more elaborate forms, in:
Sun Ge, Zheng Shaolin, DL Dilcher, Wang Yongdong, Mei Shengwu 2001 Early Angiosperms and their Associated Plants from Western Liaoning, China. Shanghai Scientific and Technological Education Publishing House, Shanghai.
... and some additional commentary on them in:
McLoughlin, S. & Pott, C. 2019. Plant mobility in the Mesozoic: disseminule dispersal strategies of Chinese and Australian Middle Jurassic to Early Cretaceous plants. Palaeogeography, Palaeoecology, Palaeogeography 515, 47-69. https://doi.org/10.1016/j.palaeo.2017.12.036

Steve
From: Paleonet <paleonet-bounces+steve.mcloughlin=nrm.se at paleonet.org> On Behalf Of Yazbeck, Thomas
Sent: den 23 maj 2021 05:20
To: paleonet at paleonet.org
Subject: Paleonet: Jurassic samaras (helicopter seeds)

Hello Paleonet,

I need help searching for answers on a real head-scratcher. I saw a social media post saying that the fossil in the photo was a Jurassic example of a "helicopter seed", aka a samara, from the Tiaojishan Formation. A modern example is presented for scale and comparison. I can't find anything online about this, although I found an older publication describing samara-like seeds from Siberian Jurassic gnetophytes. Can anyone point me towards an answer on what type of plant this might pertain to?

Thomas Yazbeck
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