Questions tagged [fossil]

A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.

Filter by
Sorted by
Tagged with
0
votes
0answers
51 views

DNA of Different Species and The Fossil Record of Their Common Ancestor

Let me please be clear about something. I believe in evolution. The evidence and data are compelling and conclusive which makes it a very well-established theory. I'm seeking a certain evidence (if ...
1
vote
1answer
66 views

Is bacillus strain 2-9-3 really 250 million year old?

I've read that in the last decade (I believe) some scientists discovered a microorganism, which they dubbed bacillus strain 2-9-3, in a crystal of salt that they think is 250 million years old and ...
0
votes
1answer
29 views

How do carbon 13:12 ratios confirm the biological origin of oldest microfossils?

I was reading this article about how Schopf and Valley’s findings in 2017 confirmed that the 3.5 billion–year-old microfossils found in the Apex chert of Western Australia are indeed remnants of ...
2
votes
0answers
49 views

Is this an imprint of a fossil?

I found this stone in the arizona desert. Sort of far from humans on the side of a Butte
1
vote
0answers
29 views

Simple and inexpensive geobiochemical studies [closed]

I plan to write a research proposal for conducting a small experiment related to geobiochemistry. I aim to make the experiment: 1) Simple (middle school aged students could comprehend its main ideas),...
1
vote
1answer
44 views

What is this row of pits along the “upper lip” of theropod skulls?

Consider the row of pits visible in the "upper lip" area (and to some extent, the "lower lip" too) of this T-Rex skull at the Palais de la Découverte, Paris (picture from Wikipedia): I noticed ...
0
votes
1answer
104 views

What could explain discrepancies between dates provided by the fossil record vs. the molecular clock?

I am studying a mud snail genus called Ecrobia. For the Caspian species (Ecrobia grimmi), there is a discrepancy between dates provided by the fossil record and the molecular clock: First appearance ...
2
votes
0answers
64 views

Can we investigate the cell biology of extinct microorganisms?

I know that there are microfossils, but not if we can we know about the organelles, genetics or macromolecules of the cells that left them behind.
1
vote
1answer
46 views

How exactly is the wood fossil process?

I would like to know in deep how exactly is the wood fossilisation process. I am fascinated how after millions of years the fossil wood preserves its microscopic characteristics. Look at this cross ...
3
votes
1answer
287 views

How can paleontologists identify morphologically different fossils as members of the same species?

I recently saw a documentary about Tyrannosaurus rex, which detailed the growth stages of the dinosaur. Apparently, it underwent a huge growth spurt at around 14 years of age, growing into the massive ...
0
votes
1answer
67 views

Are these 3.5B year old fossils the oldest on earth?

The following commentator writes: Researchers at UCLA and the University of Wisconsin–Madison have confirmed that microscopic fossils discovered in a nearly 3.5 billion-year-old piece of rock in ...