Gastropods Associated with Fossil Traces from Yacoraite Formation(Maastrichtian-Danian),and its Paleoenvironmental Significance,Jujuy,Northwestern Argentina

作     者：Carlos A.CóNSOLE GONELLA Miguel GRIFFIN Florencio G.ACENOLAZA 

作者机构：Instituto Superior de Correlacion Geologica(INSUGEO-CONICET)TucumanArgentina Division Paleozoologia de InvertebradosFacultad de Ciencias Naturales y MuseoUniversidad Nacional de la Plata(UNLP-CONICET)Buenos AiresArgentina 

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

年 卷 期：2009年第83卷第5期

页      面：860-867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：CONICET for providing financial support to this research project 

主　　题：gastropod Glossifungites Yacoraite Formation 

摘      要：We present results tending to characterize the new records of invertebrates from the Yacoraite Formation （Maastrichtian-Danian）. The fossils reported come from two stratigraphic sections exposed in the surroundings of Maimara and Jueya, province of Jujuy, northwestern Argentina. The selection was based on geological and paleontological evidence. The recovered fossils include gastropods and invertebrate fossil traces, including Planolites, Skolithos and Gastrochanoelites ichnogenus. As result of our review, we discussed the possibility of assigning the analyzed gastropods to the family Zygopleuridae （gene. et. sp. indet.）, as an approximation to the taxonomic resolution of this fossil fauna. The trace fossils were assigned to the archetypical Glossifungites ichnofacies. The study of the fossil assemblage allowed us to define a shallow depositional environment, characteristic of a marine context with high-energy conditions.