Whole-Plant Reconstruction of Scolecopteris libera (Marattiales, Psaroniaceae) from the Early Permian of China

作者：Dandan Li, Jason Hilton, Wenjun Sun, Weiming Zhou, Mingli Wan, Jiřı́ Bek, Josef Pšenička, Jun Wang · 发表于：International Journal of Plant Sciences · 年份：2025 · DOI：10.1086/733820 · 被引用次数：4 · 研究领域：Plant Diversity and Evolution、Plant and Fungal Species Descriptions、Fern and Epiphyte Biology

Premise of research. Reconstructed whole plants provide high-quality information on extinct plant species comparable to the morphological and anatomical information available from living plants but are rarely recognized from the fossil record. On the basis of fossils preserved under a blanket of ash in the earliest Permian-aged Wuda Tuff Flora, Inner Mongolia, China, we reconstruct a new whole-plant species of marattialean tree fern. Methodology. The reconstruction is based on anatomical and morphological information, including an almost entire fossil tree. Pivotal results. Scolecopteris libera is reconstructed as an arborescent tree with an apical crown of fronds above a zone of leaf scars from shed fronds. This species has stems of the Psaronius type, rachises of the stewartiopterid type, leaf scars of the Caulopteris type, small aphlebiae, vegetative leaves of the Pecopteris type, and fertile foliage of the Scolecopteris type bearing Cyclogranisporites microspores. Conclusions. Scolecopteris libera represents the most completely reconstructed in situ preserved Paleozoic marattialean fern and is the first marattialean plant reconstructed from the Wuda Tuff Flora and the Permian Cathaysian floras. Combined with geological information, our reconstruction allows us to interpret the S. libera plant as a middle-story tree fern growing in a peat-forming forest that developed on a low-lying delta plain under a humid, tropical climate, therefore occupying the niche and habitat pref...