描述了产于内蒙古宁城中-上侏罗统道虎沟化石层的两块魔蜂科雌蜂化石。根据其中一块标本建立1新种——拉氏冠腹魔蜂(Stephanogaster rasnitsyni Ding and Zhang sp.nov.),归入魔蜂亚科冠腹魔蜂属。另外一块标本归入原翅蜂亚科柔弱卡魔蜂...描述了产于内蒙古宁城中-上侏罗统道虎沟化石层的两块魔蜂科雌蜂化石。根据其中一块标本建立1新种——拉氏冠腹魔蜂(Stephanogaster rasnitsyni Ding and Zhang sp.nov.),归入魔蜂亚科冠腹魔蜂属。另外一块标本归入原翅蜂亚科柔弱卡魔蜂(Karataus exilis Zhang,Zhang and Rasnitsyn,2014),这是首次发现该种的雌性标本,进一步证明了卡魔蜂属(Karataus)存在明显的性双型现象。道虎沟生物群和哈萨克斯坦晚侏罗世卡拉套生物群中魔蜂科有很大的相似性,表明这两个生物群的时代可能相差不远。展开更多
Eurypterids,or sea scorpions,are an important group of midPaleozoic chelicerate arthropods whose evolution and palaeoecological significance have attracted much attention in recent years[1–3].One of the most remarkab...Eurypterids,or sea scorpions,are an important group of midPaleozoic chelicerate arthropods whose evolution and palaeoecological significance have attracted much attention in recent years[1–3].One of the most remarkable eurypterid families is Mixopteridae,whose members are quite large and superficially scorpion-like eurypterids bearing highly specialized anterior appendages.Their second,and especially the third,pair of prosomal limbs are enlarged and very spiny.These limbs were presumably used for prey-capture,and analogies can be drawn with the “catching basket”[4]formed by the spiny pedipalps of whip spiders(Amblypygi)among the arachnids.展开更多
文摘描述了产于内蒙古宁城中-上侏罗统道虎沟化石层的两块魔蜂科雌蜂化石。根据其中一块标本建立1新种——拉氏冠腹魔蜂(Stephanogaster rasnitsyni Ding and Zhang sp.nov.),归入魔蜂亚科冠腹魔蜂属。另外一块标本归入原翅蜂亚科柔弱卡魔蜂(Karataus exilis Zhang,Zhang and Rasnitsyn,2014),这是首次发现该种的雌性标本,进一步证明了卡魔蜂属(Karataus)存在明显的性双型现象。道虎沟生物群和哈萨克斯坦晚侏罗世卡拉套生物群中魔蜂科有很大的相似性,表明这两个生物群的时代可能相差不远。
基金supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDB26000000)the National Natural Science Foundation of China(41972006,41688103)+1 种基金the Key Research Program of Frontier Sciences of Chinese Academy of Sciences(QYZDB-SSWDQC040)the program of State Key Laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,NIGPAS)(183101).
文摘Eurypterids,or sea scorpions,are an important group of midPaleozoic chelicerate arthropods whose evolution and palaeoecological significance have attracted much attention in recent years[1–3].One of the most remarkable eurypterid families is Mixopteridae,whose members are quite large and superficially scorpion-like eurypterids bearing highly specialized anterior appendages.Their second,and especially the third,pair of prosomal limbs are enlarged and very spiny.These limbs were presumably used for prey-capture,and analogies can be drawn with the “catching basket”[4]formed by the spiny pedipalps of whip spiders(Amblypygi)among the arachnids.
