99.8% of extant vertebrate species on Earth, including humans, possess jaws(maxilla and mandible). The group which we belong to is accordingly referred to as jawed vertebrates or gnathostomes. The origin and rise of o...99.8% of extant vertebrate species on Earth, including humans, possess jaws(maxilla and mandible). The group which we belong to is accordingly referred to as jawed vertebrates or gnathostomes. The origin and rise of our group is undoubtedly one of the most critical evolutionary milestones in the history of vertebrates from fish to humans.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99.8% of extant vertebrate species on Earth, including humans, possess jaws(maxilla and mandible). The group which we belong to is accordingly referred to as jawed vertebrates or gnathostomes. The origin and rise of our group is undoubtedly one of the most critical evolutionary milestones in the history of vertebrates from fish to humans.
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.
