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Showing results for tags 'pacific'.
Found 9 results
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My husband and I found this guy while searching for shells on our cruise to Mexico. We need help with the ID. TIA.
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Was the Early Miocene a second "golden age" for the Chondrichthyans
Joseph Fossil posted a topic in General Fossil Discussion
I recall not too long ago there was a pretty interesting scientific article published in the Journal Science describing how scientists analyzed the amount and diversity of chondrichthyan denticles in ichthyoliths from the North and South Pacific dating from around 20-19 million years ago and discovered a sharp drop in the number and diversity of denticles around 19 million years ago, indicating a massive extinction took place which took sharks 2 to 5 million years to somewhat recover from (it's still unknown if this impacted chondrichthyans worldwide or just in the pacific). Here's the paper: https://www.science.org/doi/10.1126/science.aaz3549 E. C. Sibert, L. D. Rubin, An early Miocene extinction in pelagic sharks. Science 372, 1105–1107 (2021). But after reading it, I remembered how the Mississippian and somewhat Pennsylvanian periods of the Carboniferous era have been called the golden age of sharks due to the sheer diversity of chondrichthyan genera alive at that time. http://www.elasmo-research.org/education/evolution/golden_age.htm What I'm wondering is does this paper, in revealing this early miocene extinction event, inadvertently also reveal that the period immediately prior to the event was a second "golden age" for the chondrichthyans?- 19 replies
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From the album: Sketches
A recent shell from the Pacific Ocean. Soft pastels. -
What do you think about fossils in the middle of the ocean
Daniel Fischer posted a topic in General Fossil Discussion
A few days ago I thought about fossils in the middle of the ocean. What kind of fossils are there in the ocean? Are there fossils there at all? What are we missing by not looking for fossils in the deep oceans? And is it worth it to do that? I want to share some of my thoughts about this topic and mainly hear your thoughts about it. So first of all I want to talk about the oceans that are deep ocean for billions of years, I think that there will be fossils there but not much because even today there is not a lot of life in the deep oceans and exploring them is extremely hard so I think finding fossils there will be nearly impossible. What I think will be more interesting is for example the middle of the Atlantic ocean, I saw assumptions that claimed that in the end of the cretaceous what is today Africa started moving away from what is today south America. If this is true what is today the middle of the ocean was once a coast that could be full of life and today could be full of fossils that show entire new habitats that we never heard about. So what do you think? How can we find fossils in the deep oceans, and will it be worth the effort? I would love to hear anything you think about generally this topic. -
Hi everyone, I've been looking for a Megalodon from one of the more exotic localities in Asia. The problem is, most of the dealers I know stick to those originating from the United States. I've found some on various auction sites, but I don't wish to get into that because I'm not very experienced in spotting fakes and reconstructions. I would be more interested in someone who you've had fruitful dealings with. If anyone could PM me suggestions for dealers to contact regarding teeth from these localities, I would appreciate it. Thank you, Shayan
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Ahoi dear forum members. While reading a little bit about rudists some of the structures in picture of a broken Hippurites and the shape of Lapeirusia crateriformis reminded me remotely of a still unidentified beachfind from my last big holiday. That doesn´t say much, as apparently rudist could look like anything they wanted, but still I wonder what the fragment I found may be. Found it in the pacific driftline, broken like you see it. There are some barnacles, some serpulids, maybe a little bivalve also, but I wonder what the enclosing structure is. Any ideas? Aloha, J
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Looking to identify this beach find! A tooth perhaps?
HaidaGwaiiBeachFinds posted a topic in Fossil ID
Hi All! I’m new, and so very grateful for this group. I often find fossils, cool rocks and gems on my walks and it kills me to not know what they are! Take this one for instance- what is it? It looks and feels like a ginormous tooth (large as in bigger than a humans). However, I’d love to be proved wrong all in the name of solving this mystery. Thanks! Glad I came here.
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Hello, I saw this tooth for sale on the Internet. Unfortunately the photo was very bad, so I tried to creat a vector graphic. I'm not sure if the tooth belongs to a hemipristis or a blue shark. Can you help me with this? The tooth measures a little over 1cm to the tip and was found in Indonesia (Pacific ocean). Best regards from Germany!
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bone?
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