中文内容为资料集译写。每条说明所依据的摘要或正文范围。 / Chinese text is prepared for this collection. Summary evidence is identified for each entry.
Nature全文 PDF中国早志留世最古老的完整有颌脊椎动物
The oldest complete jawed vertebrates from the early Silurian of China
Nature · 2022
依据索引收录的作者摘要概括。
Summary based on the indexed author abstract.
主要发现 Key findings
约4.36亿年前的完整秀山鱼与沈氏棘鱼显示早期有颌类已有多样的身体构型;后者同时具有软骨鱼特征与大块胸甲。
Complete approximately 436-million-year-old Xiushanosteus and Shenacanthus reveal diverse early jawed-vertebrate body plans; Shenacanthus combines chondrichthyan features with extensive thoracic armour.
结论 Conclusions
有颌类在早志留世已明显分化,盾皮鱼与软骨鱼之间的特征边界比传统认识更复杂。
Jawed vertebrates were already diversified in the early Silurian, with a more complex distribution of placoderm-like and chondrichthyan features than traditionally assumed.