摘要
本文将Damesellidae科分作5个亚科(含2个新亚科——Blackwelderinae亚科和Teinis-tininae亚科),系统讨论了科内的演化,划分出3个发展阶段(初始阶段,繁盛阶段和特化阶段)。并从Damesellidae科演化特点提出传统中、上寒武统界线的弊端,建议以G.r.a.带与G.r.r.带之间的界线代之。
The Damesellidae is divided into 5 subfamilies, including 2 new subfamilies, Black-welderinae and Teinistioninae. Evolution within the family Damesellidae is discussed, and 3 stages of development are established: primary stage, flourishing stage and specializing stage. Moreover, the paper indicates some shortcomings about the traditional boundary (Lejopyge laevigata Z. / Agnostus pisiformis Z. ) between the Middle and Upper Cambrian and suggests that it should be replaced with a new boundary (Glyptagnostus reticulatus an-gelini Z. / Glyptagnostus reticulatus reticulatus Z. ).
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1992年第3期251-260,共10页
Earth Science-Journal of China University of Geosciences
关键词
演化
三叶虫
中寒武世
上寒武纪
Damesellidae, evolution, boundary between the Middle and Upper Cam-brian.
