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Tidgy's Dad
1 hour ago, Troodon said:

Very nice collection.  I started my fossil collection with Trilobites about 30 years ago but migrated to sharks and dinos.  Still love all the variety and that you have a complete animal most of the time not just a piece.

Thanks, Frank, I love trilobites but am also very interested in some of the other creatures that lived alongside them. 

I prefer the weirdness of the Palaeozoic, and i'm especially fond of brachiopods just now! :wub:

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Troodon
2 minutes ago, Tidgy's Dad said:

Thanks, Frank, I love trilobites but am also very interested in some of the other creatures that lived alongside them. 

I prefer the weirdness of the Palaeozoic, and i'm especially fond of brachiopods just now! :wub:

I can understand that with Paleo material.  I love Paleozoic sharks which are some of the weirdest around and their teeth are super cool.  

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Tidgy's Dad
On 5/12/2018 at 11:35 PM, Troodon said:

I can understand that with Paleo material.  I love Paleozoic sharks which are some of the weirdest around and their teeth are super cool.  

Indeed, I agree about the sharks. 

Not that i have any Paleozoic ones, i don't think. 

Just tried to do my billion tags bit on this thread but, as i suspected, it won't let me, I think it's only two days or something? 

If our lovely moderators are looking in, is it worth me sending someone a PM with tags to be added or not to bother?

Or are you able to do it Frank, with your 'Editing member' powers? 

Though I know you're busy. :)

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Bobby Rico

Great thread Adam I think the Cambrian has some really interesting fauna. It really interesting to compare Adam’s threads.  Thank for sharing your collection.

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Tidgy's Dad
Just now, Bobby Rico said:

Great thread Adam I think the Cambrian has some really interesting fauna. It really interesting to compare Adam’s threads.  Thank for sharing your collection.

Ta, Bobby! 

I love the Cambrian, though I don't have much. 

The Ordovician and the Devonian are also faves, but perhaps the Wenlock (Middle Silurian) is best of all. 

I will have changed my mind by tomorrow. :headscratch:

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Dpaul7

Some really nice and interesting pieces!!!!

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Tidgy's Dad
15 minutes ago, Dpaul7 said:

Some really nice and interesting pieces!!!!

Thank you, my friend. :)

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Tidgy's Dad

Well, this is far from being Cambrian, but as I've already included the Ediacaran here, I might as well post my new Rhyacian fossil here too. 

It's a Proterozoic  stromatolite, the layered cyanobacteria (probably) Collenia undosa from the Biwabek Formation, Mary Ellen Mine, Nr. Biwabek, Mesabi Range, St. Louis County, Minnesota, USA. 

It is thought to be 2.11 billion years old! :faint:

Yes, BILLION. 

wifey and I get a thrill every time we touch this piece, it's breathtaking knowing what it is and the bands of red jasper and haematite are simply beautiful. :wub:

Thank you, Ralph @Nimravis, so, so much for this remarkable and generous gift. I will treasure it for another 2.11 billion years. :)A.jpeg.2dc08c33d271d55bb577a577cc80333d.jpeg

Ralph3c.thumb.jpg.c87b478290432e61dc422545144d3a05.jpg

 

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Bobby Rico

Adam that is something special. Ralph is an amazingly kind forum member. The colour is incredible. A fossil to be treasured indeed 

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Troodon

Cool stuff a bit eldery in age

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Tidgy's Dad
On 8/12/2018 at 1:28 AM, Troodon said:

Cool stuff a bit eldery in age

Just a tad! 

Hoping for a slightly older one in the near future if all goes well! :)

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Tidgy's Dad

Sadly, it didn't happen. 

Oh, well.

But I have recently received a new trilobite species for my collection. 

Thanks to Nathan @holdinghistory for this Ogygopsis typicalis from the Lower/ Middle Cambrian of Nevada. 

And thanks to Scott @piranha for the id. 

The actual trilobit is 4 cm long.

20181012_151434-1.thumb.jpg.5e3f86957e9386e9ebcfddc1487f5064.jpg

 

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Tidgy's Dad

New trilobite! 

Thanks to my Secret Santa for this one. @Monicamay be interested to see it too! :D

This is Wujiajiania sutherlandi, Upper Cambrian, McKay Group from the East Kootenay Mountains, Cranbrook, British Colombia, Canada.

I love this species, a rarer one as the site is now not accessible, I understand. Notice it seems to have an inward curving glabella. Most interesting.

Here it is before prepping : 

5c3a7c56ba6d7_Monicasanta6.thumb.jpg.83877e09c20057dca7eee7f07b166528.jpg

And after a bit of poking with my pin vice :

20190112_235140-1.thumb.jpg.9cba0c579d3bd70fcc589e1aed702f9d.jpg20190112_235214-1.thumb.jpg.c1dcf14d4ab732c76f660b946a902f95.jpg

20190112_235250-1.thumb.jpg.3990f0b7a70fa60648dc8e5228a3d5e4.jpg

I love it! :wub:

 

 

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Tidgy's Dad

And from Morocco, a possibly mostly real upper Lower Cambrian Cambropallas telesto from the Anti Atlas Mountains. 

The block it is in :

20190503_214141-1.thumb.jpg.a763faa5d9afc4d3203c280305cd3de2.jpgIt does actually fit together pretty nearly perfectly with some gaps on the outside where the rock was broken open.  Note that the top piece seems to be mostly unbroken, not several different pieces glued together or anything suspicious. Nice uniform colour. The top piece has been broken off, as can be seen below and then glued back together, This is on both halves and enabled the finder to see where the trilobite lay within the rock and it's orientation, so, at this point the rock is glued back together, split along the right axis and then prepped. Most of the Moroccan Devonian trilobites are also found and prepped by this method, so often a break through the rock can be a sign of authenticity.  

20190503_214306-1.thumb.jpg.476bef869b69b410ce7f875699c1edc4.jpg

The two halves. Always best to get the positive and negative of these Cambrian trilobites, it's not proof of it being real, but if the two halves fit nearly perfectly, like this one, it increases the probability of it being genuine. 

20190503_214330-1.thumb.jpg.29c2baea4716d7d425120a84e2e645cf.jpg

Here is the positive with a scale.

The top left in this photo, the right of the front of the cephalon is where the rock was broken, a bit of cement has been used to fill a gap where a part of the rock was gone and probably, therefore some restoration has been carried out on the right lateral border and glabellar spine. 

20190503_214450-1.thumb.jpg.5b59a8c129adf5cded769669c405366a.jpg

The negative :

You can see the crack and a bit of white glue where the break was to the bottom left of this photo. Again some restoration of the fossil has been carried out on the edge here.

20190503_214347-1.thumb.jpg.edbb3f93b53beb104e636dfc038b44ff.jpg

A close-up of the cephalon showing the area which has been repaired at the top left : 

20190503_214523-1.thumb.jpg.93958fcc009bccd9742b1642959f9e43.jpg

The thorax :

The rough patch in the middle is just damage where some of the fossil has broken off. This is rock, not cement. The negative has some of this part of the positive stuck to it, unfortunately. 

20190503_214506-1.thumb.jpg.f88eba39c220004a64b7fed7e5b241f6.jpg

Very small pygidium on the far right.

20190503_214547-1.thumb.jpg.543f925f6865c126c957751bb33d4e8d.jpg

 

It's far from perfect, but I'm quite happy with it. :)

 

 

 

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piranha
On 1/12/2019 at 3:47 PM, Tidgy's Dad said:

Notice it seems to have an inward curving glabella. Most interesting.

20190112_235140-1.thumb.jpg.9cba0c579d3bd70fcc589e1aed702f9d.jpg

 

 

This is a common occurrence for Wujiajiania. The glabella collapsed inward and shows the outline of the hypostome.  Very nice textbook example!

 

image.png.d83b9ea039326f68226325d9b0735d70.png

 

 

figures from:

 

Chatterton, B.D.E. & Ludvigsen, R. 1998

Upper Steptoean (Upper Cambrian) Trilobites from the McKay Group of Southeastern British Columbia, Canada.

Journal of Paleontology Memoir, 49(2):1-43

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Tidgy's Dad
4 minutes ago, piranha said:

 

This is a common occurrence for Wujiajiania. The glabella collapsed inward and shows the outline of the hypostome.  Very nice textbook example!

Thanks, Scott. :)

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doushantuo

awesome stuff you have there.

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Tidgy's Dad
8 hours ago, doushantuo said:

awesome stuff you have there.

Thanks, Ben. :)

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gieserguy

A very nice collection! I’m just starting to become more interested in the Cambrian myself, so it’s nice to see what you’ve got! But of course, what I’m most interested in are the much harder to source, non-trilobite Cambrian arthropods like Fuxianhui...

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Wrangellian
1 hour ago, gieserguy said:

A very nice collection! I’m just starting to become more interested in the Cambrian myself, so it’s nice to see what you’ve got! But of course, what I’m most interested in are the much harder to source, non-trilobite Cambrian arthropods like Fuxianhui...

I've been interested in Cambrian stuff for some time and I still don't have a Fuxianhuia, they're not the easiest Chengjiang thing to get (except in bits and pieces, maybe).

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Wrangellian
On 1/12/2019 at 3:47 PM, Tidgy's Dad said:

...

And after a bit of poking with my pin vice :

20190112_235140-1.thumb.jpg.9cba0c579d3bd70fcc589e1aed702f9d.jpg

 

I love it! :wub:

 

 

Nice prep job! Just a pin vise? I might have to invest in one of those...

I have a possible chance of collecting some of those sites in the Kootenays this summer, if I can only convince someone to go with me (not doing it alone). But I've already got a few bugs from that area that could use some work.

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Tidgy's Dad
14 hours ago, gieserguy said:

A very nice collection! I’m just starting to become more interested in the Cambrian myself, so it’s nice to see what you’ve got! But of course, what I’m most interested in are the much harder to source, non-trilobite Cambrian arthropods like Fuxianhui...

Thank you very much.:)

I don't have any Chinese pieces nor could I afford any.

But that's fine as next I aim to acquire some little Cambrian brachiopods. :wub:

 

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Tidgy's Dad
On 5/18/2019 at 7:37 AM, Wrangellian said:

Nice prep job! Just a pin vise? I might have to invest in one of those...

I have a possible chance of collecting some of those sites in the Kootenays this summer, if I can only convince someone to go with me (not doing it alone). But I've already got a few bugs from that area that could use some work.

Yup, just a pin vice  I think, though I may have used a board pin and toothbush at times. And I use a jeweller's loupe to see what i am doing. 

I get pretty good results with these black on grey Cambrian trilobites with simple tools. 

What species do you have from the Kootenays ? 

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Wrangellian
17 hours ago, Tidgy's Dad said:

Yup, just a pin vice  I think, though I may have used a board pin and toothbush at times. And I use a jeweller's loupe to see what i am doing. 

I get pretty good results with these black on grey Cambrian trilobites with simple tools. 

What species do you have from the Kootenays ? 

I'm trying to find the list I compiled on TFF of all the trilobites I own, but of course it's eluding me right now.

Anyway now that I look at my Kootenay trilos again, most of them are prepped well enough, and the ones that aren't aren't really worth trying (I don't think). If I make it up there this summer hopefully I'll come back with a load of them to start working on!

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Tidgy's Dad
On 5/20/2019 at 7:02 AM, Wrangellian said:

I'm trying to find the list I compiled on TFF of all the trilobites I own, but of course it's eluding me right now.

Anyway now that I look at my Kootenay trilos again, most of them are prepped well enough, and the ones that aren't aren't really worth trying (I don't think). If I make it up there this summer hopefully I'll come back with a load of them to start working on!

:d_good_luck:

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