منابع مشابه
Comparing amber fossil assemblages across the Cenozoic.
To justify faunistic comparisons of ambers that differ botanically, geographically and by age, we need to determine that resins sampled uniformly. Our pluralistic approach, analysing size distributions of 671 fossilized spider species from different behavioural guilds, demonstrates that ecological information about the communities of two well-studied ambers is retained. Several lines of evidenc...
متن کاملIchnotaxonomic analysis of trace fossil assemblages of the Upper Triassic Nayband Formation, Tabas Block, Central Iran
This study includes a thorough systematic analysis of the ichnological record in the Late Triassic siliciclastic Nayband Formation of the Tabas Block, Central Iran. A total of 48 ichnospecies representing 28 ichnogenera are identified and their preservation aspects, paleoecological aspects, producers and behavioral aspects are discussed. The ichnofauna includes Arenicolites, Asterosoma, Bergaue...
متن کاملFossil evidence for serpentinization fluids fueling chemosynthetic assemblages.
Among the deep-sea hydrothermal vent sites discovered in the past 30 years, Lost City on the Mid-Atlantic Ridge (MAR) is remarkable both for its alkaline fluids derived from mantle rock serpentinization and the spectacular seafloor carbonate chimneys precipitated from these fluids. Despite high concentrations of reduced chemicals in the fluids, this unique example of a serpentinite-hosted hydro...
متن کاملInterpreting the fossil evidence for the evolutionary origins of music
The adaptive history of two components of music, rhythmic entrained movement and complex learned vocalization, is examined. The development of habitual bipedal locomotion around 1.6 million years ago made running possible and coincided with distinct changes in the vestibular canal dimensions. The vestibular system of the inner ear clearly plays a role in determining rhythm and therefore bipedal...
متن کاملA closer look at the "Protopithecus" fossil assemblages: new genus and species from Bahia, Brazil.
The recently extinct large-bodied New World monkey Protopithecus brasiliensis Lund 1836 was named based on a distal humerus and proximal femur found in the Lagoa Santa cave system in the southeastern Brazilian state of Minas Gerais. These bones are from an animal about twice the size of the largest extant platyrrhines. One hundred and seventy-five years later, a nearly complete skeleton was dis...
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ژورنال
عنوان ژورنال: Nature
سال: 1978
ISSN: 0028-0836,1476-4687
DOI: 10.1038/275778b0