Yolanda Barba Gutiérrez's Diary
Mammals of Nova Scotia

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July 7, 2009: Ediacaran Fauna

Sunny_day Dr. Chris Newman talked today about geology, starting with concepts such as Phantalassa o Rodinia and finishing with the concept of Ediacaran Fauna, a distinctive group of fossils dating from and existing only during Precambrian time. The fauna class arose about 600 million years ago and is named for Australia's Ediacara hills, where it was first discovered. Conceivably they may represent an early, extinct branch in the evolutionary history of animals. According to the last term, evolution provides an essential framework for studying the ongoing history of life on Earth. A central, and historically controversial, component of evolutionary theory is that all living organisms, from microscopic bacteria to plants, insects, birds, and mammals, share a common ancestor. At this point, climate change plays an important role in that evolution.
Skull
After that brief overview about evolutionary theory, let me say that today was our first sunny day. We started checking traps in the field and we trapped three chipmunks and two voles! My team really needs to improve the position of the traps in this kind of field because today we have only trapped one vole.  Later, we looked at ticks in the field with a blanket and it looks like weather plays an important role in tick counting. The warmer the weather, the more ticks we find. After lunch, we were clearing the path from the road to the "headquarters" before re-checking our traps. To conclude our day, we went to watch bats at dusk. Exciting finish for a nice day.



Click image to enlarge.


Yolanda Barba Gutiérrez, casthouse process engineer Avilés smelter, Spain