地质学报（英文版）2007，Vol.81Issue(6)：877-882,6.
Intraspecific Variability and Problematic Dimorphism in the Early Cretaceous(Valanginian)Ammonite Saynoceras verrucosum(d'Orbigny,1841)
Intraspecific Variability and Problematic Dimorphism in the Early Cretaceous(Valanginian)Ammonite Saynoceras verrucosum(d'Orbigny,1841)
摘要
Abstract
The population of Saynoceras verrucosum (d'Orbigny) from the Polish basin (Wawal section, central Poland) shows no significant intraspecific variability. Dimorphism has not been found in this population. Statistical analyses of material from the shallow epicratonic Polish basin and the relatively deep Vocontian basin (southeastern France) indicated two populations. Forms from the Polish basin are somewhat more inflated and smaller than forms from the Vocontian basin.关键词
intraspecific variation, Saynoceras verrucosum, dimorphism, Central Poland, Wawal SectionKey words
intraspecific variation, Saynoceras verrucosum, dimorphism, Central Poland, Wawal Section分类
天文与地球科学引用本文复制引用
..Intraspecific Variability and Problematic Dimorphism in the Early Cretaceous(Valanginian)Ammonite Saynoceras verrucosum(d'Orbigny,1841)[J].地质学报（英文版）,2007,81(6):877-882,6.基金项目
This work is in part supported by the National Key Basic Research Program, the Ministry of Science and Technology of China (MOST 973 Program, 2006CB701400), and is a contribution to IGCP 463/555. （MOST 973 Program, 2006CB701400）
