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封面先容

《古脊椎动物学报》2018年第56卷第4期

发表日期:2018-09-28来源:放大 缩小

封面说明: 中三叠世安尼期云南罗平生物群龙鱼属一新种,披刺龙鱼 (Saurichthys spinosa sp. nov.)。这种小型龙鱼身披两列平行的具强壮棘刺的针状侧鳞,代表着龙鱼类新的适应策略——底栖生活及其相应的形态变化。披刺龙鱼可能以较小的虾等底栖甲壳类为食;与食鱼的同类相比,它代表着中三叠世龙鱼类辐射演化阶段在营养生态位上的分化。详见本期吴飞翔等人文 (p. 273)。 ( 绘图:杨定华 )
Cover image: A new species of Saurichthys, Saurichthys spinosa sp. nov. from the Anisian (Middle Triassic) Luoping biota of Yunnan, is a small-sized saurichthyid fish characterized by two paralleling needle-like ?anks scales provided with strong spines. It shows a series of morphological modifcations, which probably underlies a novel bottom-dwelling life. Given a small body size, it might feed on the coexisting small shrimps or other crustaceans, and hence representing the trophic disparity from other fish-eating saurichthyid fishes during the radiating evolutionary stage of the group in the Middle Triassic. See details in the paper of Wu et al. (p. 273). (Illustrated by Yang Ding-Hua)

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