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Show Us Your Fossils Challenge Mode: Ordered By Geologic Time Period!


MeargleSchmeargl

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Since we've already had Pleistocene in this round ;), I guess we're starting over, so:

 

Vendotaenia antiqua (Kamieniec Podolski, Ukraine) (Ediacaran)

obraz.png.c7c2333834c506f2884eb0d299b1e735.png

 

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I'm amazed at how many people have Ediacarian fossils in their collections.  I don't have any, but that's probably because I rarely buy fossils.

 

Don

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5 hours ago, FossilDAWG said:

I'm amazed at how many people have Ediacarian fossils in their collections.  I don't have any, but that's probably because I rarely buy fossils.

 

Don

 

Hi Don,

 

I've also been surprised because it's not the kind of thing you see in a local rock shop or show.  I see pieces at big shows like Tucson or Denver but some of the online dealers have it too so I shouldn't be surprised.  I didn't think I had any until I found a piece from Michigan in a box of mixed fossils received as a gift years ago.  I need to get it photographed for this thread. 

 

Jess

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The Bryozoa Phyllodictya sp. along with some trilobite, brachiopod, crinoid and other assorted bryozoan hash from the Late Ordovician Verulam Formation at Gamebridge, Ontario, Canada.

 

Br16.1.thumb.jpg.5e6a2669d9b486260f21baf66cce1561.jpg

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Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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10 hours ago, siteseer said:

Hi Don,

I've also been surprised because it's not the kind of thing you see in a local rock shop or show.  I see pieces at big shows like Tucson or Denver but some of the online dealers have it too so I shouldn't be surprised.  I didn't think I had any until I found a piece from Michigan in a box of mixed fossils received as a gift years ago.  I need to get it photographed for this thread.

Jess

Ediacaran in Michigan? 

 

I'm pretty much restricted to buying Ediacarans as there is no way I'll ever manage to collect fossils of that age myself.

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11 hours ago, Wrangellian said:

 

Ediacaran in Michigan? 

 

I'm pretty much restricted to buying Ediacarans as there is no way I'll ever manage to collect fossils of that age myself.

 

Yes, there are stromatolites in the Kona Dolomite dated at 2.1 or 2.2 billion years old.

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For the Mississippian, a Pentremites girtyi blastoid with brachioles and a bit of stem from the Big Clifty Formation of Sulphur, Indiana, USA. Blastoids were a group of filter-feeding echinoderms like crinoids, and it is generally fairly rare for their fossils to preserve the delicate filtration appendages a.k.a. brachioles.

 

AA2E7821-77B6-4B2C-960C-3F381C3D05F9.thumb.jpeg.ad282f54ddf7db030aaeece5d047cbf8.jpeg

Edited by Mochaccino
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Calamostachys sp.

Bonner Springs Shale, Kasimovian/Missourian Stage, Pennsylvanian

Parkville, Missouri, USA

 

post-6808-0-23158200-1374825859.thumb.jpg.ec2fe090ba828e91758374010619b50f.jpg

 

post-6808-0-61156700-1374825846.thumb.jpg.f980290f732ced45fec96fb2691894f7.jpg

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Context is critical.

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On 9/27/2022 at 11:12 AM, siteseer said:

Yes, there are stromatolites in the Kona Dolomite dated at 2.1 or 2.2 billion years old.

I thought you might be referring to the Kona stroms. That is much earlier than Ediacaran, which went from 635-541 m.y.a.

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10 hours ago, Mochaccino said:

For the Mississippian, a Pentremites girtyi blastoid with brachioles and a bit of stem from the Big Clifty Formation of Sulphur, Indiana, USA. Blastoids were a group of filter-feeding echinoderms like crinoids, and it is generally fairly rare for their fossils to preserve the delicate filtration appendages a.k.a. brachioles.

 

AA2E7821-77B6-4B2C-960C-3F381C3D05F9.thumb.jpeg.ad282f54ddf7db030aaeece5d047cbf8.jpeg

:envy: Beautiful, really rare :wub:

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I jump to upper jurassic, nice dragonfly Tharsophlebia, two wings are missing (predator), Altmühltal-Region, Southern Germany

 

 

Tharsophlebia_Eichstaett.jpg

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A sectioned pyritized Holcophylloceras guettardi phragmocone with mineralized calcite in the septa from the Early Cretaceous Aptian at Méouilles, Provence, France.

 

1961518694_A28a.Holcophyllocerasguettardi.1.thumb.jpg.2c3efe4c111b0ed4eb5ee072863b02df.jpg

 

 

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Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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13 hours ago, Missourian said:

Calamostachys sp.

Bonner Springs Shale, Kasimovian/Missourian Stage, Pennsylvanian

Parkville, Missouri, USA

 

post-6808-0-23158200-1374825859.thumb.jpg.ec2fe090ba828e91758374010619b50f.jpg

 

post-6808-0-61156700-1374825846.thumb.jpg.f980290f732ced45fec96fb2691894f7.jpg

 

What an incredible piece! I don't know that I have ever seen a branch full of them like this. 

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16 hours ago, Mochaccino said:

For the Mississippian, a Pentremites girtyi blastoid with brachioles and a bit of stem from the Big Clifty Formation of Sulphur, Indiana, USA. Blastoids were a group of filter-feeding echinoderms like crinoids, and it is generally fairly rare for their fossils to preserve the delicate filtration appendages a.k.a. brachioles.

 

AA2E7821-77B6-4B2C-960C-3F381C3D05F9.thumb.jpeg.ad282f54ddf7db030aaeece5d047cbf8.jpeg

 

Interesting.  I've seen a lot of blastoids but not one that well-presarved.

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I go on with a nice Crab Coeloma cf. helmstedtense from the old pit Silberberg near Helmstedt / Braunschweig, (now) middle Germany, was (30 years ago) near the boarder to GDR. Size is around 13 cm

 

 

krabbe_hand.JPG

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On 9/9/2022 at 11:03 AM, rocket said:

middle Eocene, Messel Pit, Germany, a nice mammal, Kopidodon, size around 80 cm from snout to tailIMG_1233.thumb.JPG.da391ebdf82a01a9d89ff71f3a14f54b.JPG

 

I didn't comment on this when I was first posted but this is one of the most unusual vertebrates I've seen in this thread.  Kopidodon belongs to an extinct order, Pantolesta, of mammals that appeared in the Early Paleocene and survived into the Oligocene.  It was a diverse group with some apparently living like otters, others more like rodents, while Kopidodon was more like a raccoon.  Unfortunately, the group died out without leaving any descendants but it lasted longer than most other Paleocene groups.  Most pantolestans are known mostly by just teeth and jaw sections, but the Messel site has provided complete skeletons like this one.  Wow, great specimen.

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