U.S.-Romania Research: Jurassic and Cretaceous Decapod Crustaceans from Romania: Early Radiation Patterns in the Decapoda

美国的目标是-罗马尼亚的研究项目之间的罗德尼M。作者声明：Carrie E.肯特州立大学的Schweitzer和布加勒斯特大学的Iuliana Lazar将扩大我们对侏罗纪和白垩纪时期十足类化石多样性的了解，当时该目的茎群经历了重大的多样化事件，为现代十足类动物群的出现奠定了基础，然后扩展，如螃蟹，龙虾和虾。 美国和罗马尼亚的专家和学生将共同研究喀尔巴阡山脉南部四个地点的沉积学历史和古生物学，由于以前的访问限制，该地区尚未得到很好的研究。 稳定同位素分析和来自野外工作的新数据将被结合起来，以描述埋藏和古生态历史的组合。 由于这些山脉位于北方和西欧之间的十字路口，已知在侏罗纪和南部的特提斯海道中含有丰富的十足类动物群，研究人员希望确定两个主要的多样化事件集中在哪里。 研究结果将丰富我们对十足类这一全球重要生物类群的分类学、生物地层学、地理学和演化的认识。这个古生物学项目通过使美国和中欧的专家能够联合收割机互补人才并在共同感兴趣和有能力的领域共享研究资源，实现了推进科学知识的计划目标。 更广泛的影响包括通过在喀尔巴阡山遗址的实地考察向美国学生介绍国际合作的好处，并直接参与该项目对古代沉积物和十足类化石辐射的分析。

The goal of this U.S.-Romanian research project between Rodney M. Feldman and Carrie E. Schweitzer of Kent State University and Iuliana Lazar of the University of Bucharest is to expand our knowledge of the diversity of fossil decapods during Jurassic and Cretaceous time intervals when stem groups of the order experienced major diversification events that set the stage for the appearance, then expansion, of modern decapod fauna, such as crabs, lobsters and shrimp. The team of U.S. and Romanian experts and students will jointly examine the sedimentological history and paleontology of four sites in the southern Carpathian Mountains, a region that has not been well studied due to previously limited access. Stable isotope analyses and new data derived from the fieldwork will be combined to describe the taphonomic and paleoecological history of the assemblages. Because these mountains lie at a crossroads between northern and western Europe, known to contain rich decapod faunas in the Jurassic and the Tethyan seaway to the south, the researchers hope to determine where the two major diversification events were centered. Results are expected to enrich our understanding of the taxonomy, biostratigraphy, biogeography and evolution of decapods, a globally important group of organisms. This project in paleontology fulfills the program objective of advancing scientific knowledge by enabling experts in the United States and Central Europe to combine complementary talents and share research resources in areas of strong mutual interest and competence. Broader impacts include the introduction of U.S. students to the benefits of international collaboration through fieldwork at Carpathian sites and direct involvement in the project's analysis of ancient sediments and fossil decapod radiation.