Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
SlideshowReport

Earliest fossils and living cyanobacteria

Description
(a) A fossilized prokaryote about 3.5 billion years old that is thought to be an early cyanobacterium. (b) A modern cyanobacterium, which has a similar morphology. Cyanobacteria are unicellular, but they aggregate into chains as shown here.
Related Images
Add Comment
1 Comment
12 years ago
It appears as though the glass is shattered on the left.
Explore
Post your homework questions and get free online help from our incredible volunteers
  1378 People Browsing
 130 Signed Up Today
Your Opinion