Search the Community
Showing results for tags 'conservat lagerstaette'.
-
I have had this question for some time now and recently had it come up again. I was wondering does anyone know if there are particular conditions that affect the number of Conservat Lagerstätten we see on the earth at any given time? I got this question because in my time collecting and learning about fossils it seemed to me that times like the Cambrian seem to have quite a number of these sites, and the type of preservation in them seems fairly consistent and similar, as we go into the Ordovician I know if fewer but still a few and they also have pretty similar preservation. The Silurian and Devonian on the other hand, seem to have much fewer, off the top of my head I can probably only think of a couple, but then you get into the Carboniferous and it once again seems like there are much higher numbers of these sites. The Carboniferous is especially interesting because a number of these sites have more usual nice preservation like Bear Gulch, Kinney Quarry, Hamilton Kansas, etc but also a number of sites have Siderite concretions with exceptional preservation like a few sites in the US including Mazon Creek and some in the UK I believe, a type of preservation I have not seen in any other time periods. I am not sure if this patchy record of sites with good quality preservation continues further outside of the Paleozoic, but this is where I noticed it occuring due to mostly focusing on that time span. Is all of this down to the different conditions on earth during these different times? Is there a degree that our sampling bias or just how much attention each of these gets that plays into how many we know from each time? I have been curious about this for some time and thought maybe someone here would know more about the subject. Thanks for looking! Misha
- 7 replies
-
- 3
-
- conservat lagerstaette
- fossil preservation
-
(and 1 more)
Tagged with: