期刊
PALEONTOLOGICAL JOURNAL
卷 51, 期 6, 页码 663-686出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S003103011706003X
关键词
Mollusca; origin; early evolution; Kimberella; Cambrian; morphology; systematics; phylogeny
类别
资金
- Russian Foundation for Basic Researches [16-05-00651]
- Basic Research Program of Presidium of the Russian Academy of Sciences, Search and Basic Scientific Studies in the Interests of Development of the Arctic Zone of Russian Federation [I.32P]
The paper gives an overview of the modern hypotheses on the origin of the phylum Mollusca and the formation of its main classes. The Cambrian stage of molluscan evolution is characterized based on the paleontological material. The doubtfulness of assignment of the Precambrian (Vendian) soft-bodied fossil Kimberella to mollusks is argued. Judging from the interpretation of the morphologically diverse Cambrian fossils, it is suggested that the classes Polyplacophora, Monoplacophora, Gastropoda and Bivalvia formed already near the Precambrian-Cambrian boundary, i.e., from the beginning of the paleontologically documented evolutionary history of the phylum, whereas the assumption of the later origin of these taxa is unconvincing. The remaining classes of mollusks arose later, i.e., Cephalopoda, in the Late Cambrian; Scaphopoda, in the Ordovician; and Aplacophora, in the Silurian.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据