The Indian plate has a long history of rifting,drifting and collision.It travelled for about 9000 km from its position within Gondwana to reach its present position within Asia.During its northward journey,the Indian ...The Indian plate has a long history of rifting,drifting and collision.It travelled for about 9000 km from its position within Gondwana to reach its present position within Asia.During its northward journey,the Indian landmass remained physically isolated for about 35 Ma from all other landmasses after its final break-up from Madagascar.A critical examination of the vertebrate fossil record of the Indian plate for the period of early and late drift phases offers very limited information for the early drift phase,but reveals a complex biogeographic history for the late drift phase.展开更多
The hippocampus in humans and other mammals is essential for episodic and relational memories. Comparative evidence indicates that a hippocampal pallium homologue is present in birds, reptiles, amphibians, ray-finned ...The hippocampus in humans and other mammals is essential for episodic and relational memories. Comparative evidence indicates that a hippocampal pallium homologue is present in birds, reptiles, amphibians, ray-finned fishes, cartilaginous fishes and agnathans. Some of their characteristics, such as the topological position and the pattern of connectivity, appear remarkably well conserved. We review here substantial data showing that in all the vertebrate groups studied up to date, from fish to mammals, the hippocampus plays a fundamental role in spatial memory. In these vertebrates groups, the hippocampal pallium homologue is involved in the use of map-like, relational representations of the objective space that provide stable allocentric frames of reference, thus allowing flexible navigation. These similarities suggest a common evolutionary ancestry and indicate that the functional properties of the hippocampus appear early in the vertebrate phylogenesis and are retained through the independent evolution of the vertebrate lineages.展开更多
基金Science and Engineering Research Board(SERB),New Delhi for financial support in the form of a major research project(EMR/2017/004143)funding support from J.C.Bose National Fellowship SERB for this work.
文摘The Indian plate has a long history of rifting,drifting and collision.It travelled for about 9000 km from its position within Gondwana to reach its present position within Asia.During its northward journey,the Indian landmass remained physically isolated for about 35 Ma from all other landmasses after its final break-up from Madagascar.A critical examination of the vertebrate fossil record of the Indian plate for the period of early and late drift phases offers very limited information for the early drift phase,but reveals a complex biogeographic history for the late drift phase.
基金PSI2011-27489 from the Spanish MINECO F.E.D.E.R.
文摘The hippocampus in humans and other mammals is essential for episodic and relational memories. Comparative evidence indicates that a hippocampal pallium homologue is present in birds, reptiles, amphibians, ray-finned fishes, cartilaginous fishes and agnathans. Some of their characteristics, such as the topological position and the pattern of connectivity, appear remarkably well conserved. We review here substantial data showing that in all the vertebrate groups studied up to date, from fish to mammals, the hippocampus plays a fundamental role in spatial memory. In these vertebrates groups, the hippocampal pallium homologue is involved in the use of map-like, relational representations of the objective space that provide stable allocentric frames of reference, thus allowing flexible navigation. These similarities suggest a common evolutionary ancestry and indicate that the functional properties of the hippocampus appear early in the vertebrate phylogenesis and are retained through the independent evolution of the vertebrate lineages.
