作者
Chenyang Cai, Hermes E Escalona, Liqin Li, Ziwei Yin, Diying Huang, Michael S Engel
发表日期
2018/9/10
期刊
Current Biology
卷号
28
期号
17
页码范围
2806-2812. e1
出版商
Elsevier
简介
Cycads, unlike modern wind-pollinated conifers and Ginkgo, are unusual in that they are an ancient group of gymnosperms pollinated by insects [1–3]. Although it is well documented that cycads were diverse and abundant during the mid-Mesozoic, little is known about their biogeography and pollination before the rise of angiosperms. Direct fossil evidence illuminating the evolutionary history of cycads is extremely rare [4, 5]. Here we report a specialized beetle-mediated pollination mode from the mid-Cretaceous of Myanmar, wherein a new boganiid beetle, Cretoparacucujus cycadophilus, with specialized pollen-feeding adaptations in its mouthparts and legs, was associated with many pollen grains of Cycadopites. Phylogenetic analyses indicate Cretoparacucujus as a sister group to the extant Australian Paracucujus, which pollinate the cycad Macrozamia riedlei. Our discovery, along with the current disjunct …
学术搜索中的文章
C Cai, HE Escalona, L Li, Z Yin, D Huang, MS Engel - Current Biology, 2018