首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 9 毫秒
1.
2.
BACTERIA     
《Science (New York, N.Y.)》1891,17(438):357-358
  相似文献   

3.
BACTERIA     
《Science (New York, N.Y.)》1888,12(307):310-313
  相似文献   

4.
BACTERIA     
  相似文献   

5.
BACTERIA     
《Science (New York, N.Y.)》1884,3(59):362-364
  相似文献   

6.
7.
8.
Unmineralized bacterial cells, mostly Micrococcus sp., but including also Streptococcus sp. and Actinomyces sp., were found in enormous numbers in lake beds of the Newark Canyon Formation of Early Cretaceous age, Eureka County, Nevada. The micrococci are black, and have an average diameter about 0.5 micro. Similar black micrococci (0.4 to 0.7 micro) were found in profusion in the bottom mud of Green Lake, New York. About 80 percent of this mud consists of minute idiomorphic calcite crystals and about 20 percent of these contain enormous numbers of the black micrococci. It is suggested that the Early Cretaceous bacterial cells owe their preservation to occlusion in calcite crystals that grew in a black, bacterial mud in a meromictic lake in which part of the Newark Canyon Formation accumulated.  相似文献   

9.
10.
11.
12.
13.
ACTIVE IRON     
  相似文献   

14.
15.
16.
17.
18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号