在对中国东北辽宁本溪中三叠统林家组的化石研究中, 发现了木贼目瓣轮叶属一个新种——林家瓣轮叶(Lobatannularia linjiaensis sp. nov.)。该种叶轮小, 明显分成两瓣, 每瓣叶数约10–12枚。叶线形至倒披针形, 叶长差别大, 叶联合长度占叶长约1/3–3/4。自1927年Kawasaki建立瓣轮叶属以来, 该属已至少发现了33种, 其中大部分报道于二叠纪, 少数见于三叠纪。瓣轮叶属作为晚古生代华夏植物群孑遗分子之一, 当前该属新种的发现不仅丰富了瓣轮叶属的分类多样性, 而且拓展了对二叠纪-三叠纪之交生物大灭绝及之后复苏过程中瓣轮叶属演化趋势的认识。
Lobatannularia linjiaensis sp. nov. belonging to the order Equisetales has been described from the Middle Triassic Linjia Formation of Benxi in Liaoning, Northeast China. The new species is characterized by small leaf-whorls, each leaf-whorl forming two marked lobes, generally composed of 10–12 leaves; leaves linear to oblanceolate, with different sizes in length, united for 1/3 to 3/4 of their length. Since Kawasaki erected the genus Lobatannularia in 1927, at least 33 species have been described on the basis of the morphology of the megafossils. Most of them are collected from the Permian, seldom found in Triassic. As a relict Cathaysian element, the new species not only enlarges the knowledge in taxonomy of Lobatannularia, but also provides an opportunity to understand the evolution of Lobatannularia in the mass extinction through the Permi-an?Triassic transition and its subsequent recovery.