Intraspecific Variability and Problematic Dimorphism in the Early Cretaceous(Valanginian)Ammonite Saynoceras verrucosum(d'Orbigny,1841)

作     者：Izabela PLOCH 

作者机构：Polish Geological InstituteGeological Museum 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2007年第81卷第6期

页      面：877-882页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：国家重点基础研究发展计划(973计划) 国家重点基础研究发展计划(973计划)(2006CB701400) IGCP(463/555) 

主　　题：intraspecific variation Saynoceras verrucosum dimorphism Central Poland Wawal Section 

摘      要：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.