Questions tagged [fossils]

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(Fósil hallado en Zapala, Neuquén) Fossil found in Zapala, Neuquén, Argentina

(Alguien podría decirme qué es?) Could someone tell me what it is? Zapala is in Western Argentina, east of the Andes Mountains. enter image description here English translation via Google Translate
Cristian's user avatar
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0 answers
59 views

Are These Leaf Fossils Found Near a Texas Lake Shore?

I recently came across some intriguing specimens near a lake shore in Texas and am seeking your expertise to help identify them. The objects have a few characteristics that lead me to believe they ...
user3424230's user avatar
4 votes
2 answers
83 views

What other areas of the planet might be rich in Mesozoic-era fossils that have yet to be explored?

China is a region rich in sedimentary rocks from the Mesozoic period and incredible discoveries about dinosaurs have been made there since the 1990s. I was wondering which other areas of the planet ...
Bebop's user avatar
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4 votes
0 answers
69 views

Regular-ish chipings in slate - weird weathering, hewn or a fossil?

When hiking in the Moselvalley (on the Calmont, to be precise) I found a slightly rhomboid piece of slate measuring about 10 by 11 cm, with a thickness of ca. 2 to 4 cm. As can be seen in the first ...
Erik's user avatar
  • 756
1 vote
0 answers
24 views

Could this be a tooth or a fossil, looks like a molar [closed]

Found at shore off Genoa, Italy. My kids really think it’s a molar of some kind..
Lia's user avatar
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5 votes
1 answer
203 views

Is this a fossil?

Found this on open heath land close to RAF Honington, Suffolk, UK. Its about the size/shape of a cherry tomatoe cut in half. Thanks
Nick Baines's user avatar
4 votes
1 answer
155 views

Is this a fossil or something anorganic?

So, i found a weird structure in a piece of jurassic limestone. It is cylindrical and roughly one cm in diameter, enters the stone on one side and leaves on the other. Under the microscope, you can ...
ductTapeIsMagic's user avatar
2 votes
1 answer
1k views

What is the difference between permineralization and replacement

I am reading on the petrification process. I found that there are two processes which are permineralization and replacement. I am not sure I fully comprehend the difference between them. I wonder if ...
Lynn B.'s user avatar
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4 votes
1 answer
334 views

What materials are fossils made of?

I was reading on fossilization and I came across petrifaction. Are fossils that take the shape (have the shape) of the original organism made of only stone or iron? Can there be a fossil made of any ...
Lynn B.'s user avatar
  • 61
2 votes
1 answer
112 views

Which trilobite species are these?

Asking for a friend. These would probably fit better on archeology exchange, but as far as I know that kind of site does not exist yet. First specimen, friend suspects it's some kind of Proetus. ...
user avatar
2 votes
2 answers
59 views

Will the fossil record ever be complete enough to see inside punctuated equilibria?

It is generally believed that the time over which speciation occurs is too short (~10,000-100,000 years) for our museum collections to include many transitional forms between species. (Transitional ...
Retracted's user avatar
  • 123
1 vote
0 answers
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plant fossil or trace of water?

I've found this rock at the altitude of 2500 meters. Is it a plant fossil or trace of water?
Mohsen Haddadi's user avatar
2 votes
2 answers
62 views

Natural Gas fields as power sources

Natural Gas fields as the name suggests are a source of natural gas which in turn are a major source of energy for almost every economy. Recently in news is Gateway to Hell of Turkmenistan, a natural ...
Lost's user avatar
  • 121
5 votes
1 answer
267 views

What is this fossil? What is this crystal?

My daughter found this fossil while walking through the Swabian Jura, in Southern Germany. She asked me about it, but I have absolutely 0 clue about geology. The crystal part is 3cm in diameter, but ...
Eric Duminil's user avatar
3 votes
0 answers
41 views

Is the Talus (or Astralagus) the most frequently recorded fossil mammal bone?

I was once told by a paleontologist that the talus (or astralagus) bone is one of the most frequently observed fossils among mammals. Can anyone verify if this might be true? Because of the density ...
karisiasafaris's user avatar
4 votes
1 answer
563 views

Are there any rock recognition practices or games?

I'm a complete beginner in fossil collection but from my understanding I should mostly look at sedimentary rocks for fossils. However the problem is that rocks that I see in real life are not the same ...
Nicholas Humphrey's user avatar
1 vote
1 answer
80 views

What are some effective approaches to enhancing fossils in amateur found rocks?

My stepson found this rock on the shore of Lake Michigan and gave it to my son who loves fossils. I'd like to really bring out those fossils. What are some techniques that I can try that won't ...
Dancrumb's user avatar
  • 111
1 vote
0 answers
846 views

What is deepest fossil we have found?

Deepest as in has had the most sediment above it. Obviously it has to be exposed to be found but it's still considered deep if its previously been covered by sediment. I should mention im not looking ...
Shannon's user avatar
  • 179
5 votes
1 answer
156 views

Fossil ID: possible fauna fossil, from Perlis, Malaysia

I found this fossil while doing my fieldwork in limestone area. Description below may help to identify it. Location: NW Perlis, Malaysia (Setul Formation). Hilly Area. My Observation: Have a curly ...
mrm9719's user avatar
  • 51
3 votes
2 answers
361 views

What is this fossil found in flint in Kent?

My 7 year old son found this fossil whilst cracking open flint in Deal, Kent. The fossil (assuming it is) looks like scales/cells/shell and is chalky. The oblong lines are raised and well defined and ...
Andy's user avatar
  • 31
2 votes
3 answers
285 views

What would people drilling through Mount Everest find?

I am interested in knowing what kind of fossils we would find if we were to drill horizontally through the mountain and what we would find if we were to drill vertically. Would we find anything ...
Writer-at-large's user avatar
1 vote
0 answers
36 views

Dating recent skeletons with radiometric dating techniques

Can we use radiometric dating techniques on recent skeletons from, say, around the year 2000 and so on and get the same result as the recorded date of death of the owner of the skeleton? If yes (or no)...
SnoopyKid's user avatar
  • 111
1 vote
2 answers
71 views

Are marine fossils in the mountain happens due to lower sea levels?

https://9gag.com/gag/aBme0M2 This one says it is I am not sure whether to ask this in geology or biology. How does marine fossils show up in mountains?
user avatar
5 votes
0 answers
122 views

What is this fossil? [closed]

While walking in a state park yesterday in the Chattanooga, TN area we came across a rock that looked like this. Is it some kind of holdfast or washout from cement work? (There is an old reservoir ...
Jeff's user avatar
  • 151
4 votes
0 answers
38 views

Looking for videos/GIFs of petrification/permineralization

Do you know of any good animations, videos, or GIFs of petrification/permineralization? For some students verbal and written explanations don’t work, they don't always visualize well. So it’d be ...
IndependentThinker's user avatar
2 votes
1 answer
82 views

What is the time period of these chalk/clay layers?

These limestone-clay rocks are very common in the Alps, they come from weather changes. How many years does it take to make one of the rock bands? 7 years, equivalent to an el-nino type event? 1000 ...
bandybabboon's user avatar
  • 1,339
1 vote
0 answers
55 views

Have fossil-containing gastroliths been found inside other fossils?

This article describes gastroliths ("stomach stones"). It says that gastroliths have been found inside the rib cages of fossilized creatures such as dinosaurs. It also says that gastroliths sometimes ...
Nathan Long's user avatar
1 vote
2 answers
308 views

How was the onset of the Cambrian period dated?

What dating method was used to determine the beginning of the Cambrian, and what was its margin of error? Was only one fossil dated, or were a number of similar fossils used?
Michael Walsby's user avatar
6 votes
4 answers
263 views

Has there ever been a case where we have found what appears to be a prehistoric fossil but have no way of dating it?

I find that when ever I learn of a new fossil, the age of said fossil is always mentioned. This perplexes me given how intuitively rare it seems to have radioactive material to date a formation. I ...
Shannon's user avatar
  • 179
1 vote
1 answer
625 views

Identification of Iguanodon and Maiasaura

What are some good ways to distinguish between Iguanodon and Maisaura fossils, or even just pictures of the two dinosaurs?
COsborne's user avatar
1 vote
1 answer
390 views

Have fossils ever been found in the asphalt lakes of Trinidad and Venezuela?

La Brea tar pits in California are the result of ancient oil seepages and famous for the fossils of extinct animals which were trapped in the tar. The asphalt lakes in Trinidad and Venezuela are also ...
Michael Walsby's user avatar
4 votes
2 answers
871 views

How long ago was the first limestone formed?

It is readily apparent from the fossil record that the first limestone was laid down hundreds of millions of years ago, but how long ago was the very first limestone formed? It could be approximately ...
Michael Walsby's user avatar
4 votes
0 answers
53 views

Continuous production of amber by trees in one location

In which well known amber location did trees produce amber for the longest continuous period of time, roughly how long was it, and was it long enough to see signs of evolution at work in any of the ...
Michael Walsby's user avatar
8 votes
0 answers
46 views

What geographical features facilitate amber fossilization?

Image source: Wikimedia. There seems to be a few places in the world where amber (fossilized tree resin) can be found in large quantities: Amber can be found in many places around the world ...
Rebecca J. Stones's user avatar
2 votes
2 answers
144 views

Is there a massive drop in quality of Cretaceous vs. Triassic dinosaur fossils?

One thing that still blows my mind about dinosaurs is the massive timeline. Relevant to this question are the time periods: Triassic Period (252.17 to 201.3 million years ago) Cretaceous Period (145 ...
Rebecca J. Stones's user avatar
2 votes
1 answer
68 views

Can hippopotamus fossils be found all along the Nile?

The image below shows their historical range (red) and current range (green) of hippopotamuses: Image source: Six Surprising Facts About Hippos, 2014 Hence my question... Question: Can hippopotamus ...
Rebecca J. Stones's user avatar
1 vote
3 answers
95 views

What is this (possible) fossil from the triassic/jurassic boundary?

My son recently found this: while walking at Waterloo Bay in Northern Ireland. It looks (to my untrained eye) like it could be a plant fossil. Is this correct? If so, is it possible to tell anything ...
frodoskywalker's user avatar
6 votes
2 answers
113 views

Curious natural patterns on the surface of basalt blocks that make up the sidewalk

During one of my walks through the city streets, I noticed that some basalt blocks that make up the sidewalk have in their surface some very curious natural patterns: The photos above was taken at ...
Lacobus's user avatar
  • 175
3 votes
2 answers
35 views

Is there any significance of lacustrine gastropoda fossils regarding paleoenviroment interpretation?

How to interpret lots of gastropoda fossils seen in lacustrine marls? Do they indicate any paleoenvironment conditions? Depth, temperature, chemistry, ph?
Muharrem Yavuz's user avatar
2 votes
2 answers
386 views

Fossil in Chert pebble picked up on a Kent beach

Please identify the fossil in the picture below. size of pebble is around 40mm diameter and the pebble had been broken to reveal the internal structure.
John's user avatar
  • 31
3 votes
1 answer
291 views

How Good is The Evidence For Snowball Earth?

Some geologists say there were times between 770 million years BP and 630 million years BP when ice ages were so profound that the Arctic and Antarctic ice caps met at the equator. This is called the ...
Michael Walsby's user avatar
1 vote
1 answer
163 views

What exactly is ammonite?

I miss the definition of ammonite. In my opinion, many authors confuse the term "Ammonite" and "Ammonoid". Ammonoids (Ammonoidea) are large group of cephalopods including for example goniatites (...
Petr Hykš's user avatar
3 votes
1 answer
337 views

Donation Options for Fossil and Mineral Collection

The father of a friend of mine passed away recently. He left behind an extensive collection of fossils and minerals. They include a saber tooth tiger skull, mastodon tooth, shark teeth, tons of ...
C Teegarden's user avatar
0 votes
1 answer
143 views

I need help with these geode like rocks [closed]

I found these rocks in my pasture and was excited because I thought I had found some geodes. The rocks were in a sandy bank and looked like eggs sticking out of the bank. I am located in Ness County ...
Michelle Tillitson's user avatar
1 vote
2 answers
299 views

What is this stratefied limestone sphere?

What is this stone from the alps of provence? It's two spheres, one of them is made of at least 25 layers.
bandybabboon's user avatar
  • 1,339
5 votes
1 answer
195 views

Geological feature - what is it?

Hello, We were walking in Bundoran in Donegal County, Ireland today and we encountered the geological feature shown in the picture (from above from cliffs and from very close up at beach level). We ...
user132290's user avatar
3 votes
1 answer
427 views

Fossil from North Norfolk coast, UK

This palm-sized rock is from the beach at Eccles-on-Sea (North Sea coastline). I can see four types of material: A brown, slightly translucent, 6cm tubular fossil(?) that I can mark with a steel ...
jjs's user avatar
  • 33
2 votes
2 answers
431 views

What is this strange fossil I found?

I found this weird fossil rock and I am wondering if anybody could help identify what could have made the imprint in it or what kind of rock it is?
Crozier's user avatar
  • 141
7 votes
1 answer
1k views

What is the oldest fossil on Earth?

What is the oldest fossil ever found on Earth? Where and when was it found? What was the oldest fossil with a brain with 2 hemispheres ever found?
Muze's user avatar
  • 1
3 votes
1 answer
811 views

How quickly can coral fossilize?

On a trip to Honduras a few years ago I visited one of the islands off its north coast with a friend and went to a section of it mostly with nothing but residences which looked far less visited by ...
SeligkeitIstInGott's user avatar