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Showing results for tags 'density'.
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I have found, what I believe to be a fossilised vertebra, and would like any advice on what species it could be and how old it may be. The item was found along a riverbank. It has a surprising weight for it's size - I can record the exact weight with electronic scales within the next 24 hours. The object appears to be of white bone with a red/iron marrow present through the centre. There are crystals in the recesses which sparkle when the light hits it and when it is wet. The top and bottom of the item are very smooth. The specimen has been washed with warm water and a toothbrush. It ts extremely tactile, a pleasure to hold! I didn't want to put it down until I decided to keep it in a resealable plastic bag. I have some pictures which I will enclose (the sun was setting and so there are long shadows cast - magnify the images for better clarity) - I am a novice photographer! I also have a short video which could be sent via WhatsApp. I have contacted my local museum and left a voice message - the museum closed for refurbishment for 2 years about a week ago!
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Hi I have a somewhat weird question you can probably help me with: I was currently discussing with some other fossil enthusiasts about how rare dinosaur fossils really are. Obviously, there are areas where no dinosaurs are found and then there are places where dinosaur fossils have been piled up and preserved in large numbers. My friends claim was that dino fossils are not rare at all but are very labourous to collect (and therefore rare). -> I am trying to get an idea about the number of dinosaur fossils per area or even better per volume. For example, If I look at a certain area (for example 1 km2) of a fossil rich formation such as Hell Creek or Morisson and then: - I carefully look at the whole surface, what can I expect to find? - If I would vertically dig through 1m of matrix on the whole area, how many bones or teeth would I find? - If I would vertically dig through 1m of matrix on the whole area, how many museum quality skeletons (eg 30%+ complete) would I find? I am aware that the example above is not practical to do experimentally. However, I am trying to get an order of magnitude (is it more like 0.001 dino or 100 dinos for the given volume). Is there any scientific data available about dino/volume?