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Show Us Your Chinese Trilobites

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Wrangellian

A couple of each of these also:

5cf9fed8d9181_Coronocephalusgaoluoensis.thumb.JPG.20958ea6893c8329faec16992c5a06a7.JPG

Coronocephalus gaoluoensis

Silurian - Wenlockian?

(what formation?)

Mtns of western Hunan, China

 

 

5cf9fede1af0d_Ductinax2.thumb.JPG.bcf95fbc75b1134c7c32423aeab9a045.JPG

Ductina vietnamica + styliolinids

M. Dev. - Eifelian

Nandan Fm

(what town?), Hunan, China

 

I thought these were one of the last Phacopids, Famennian age, but apparently they are Eifelian so they must be about coeval with the other Phacopids like Eldredgeops etc..?

 

I think this is the extent of my Chinese bugs.

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Wrangellian

Here's a closer shot of one of the Ductinas showing the styliolinids better:

 

Ductina vietnamica det.jpg

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Sinopaleus
5 hours ago, Wrangellian said:

Here's a closer shot of one of the Ductinas showing the styliolinids better:

 

Ductina vietnamica det.jpg

 

Great fossils! That's a great Ductina specimen :) 

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Sinopaleus
22 hours ago, DevonianDigger said:

Where are you guys getting all of these!? I keep snagging mine at auction when I can, but there's no diversity in what's offered.

 

7 hours ago, Wrangellian said:

I had that same question... The usual site doesn't have this much variety available (unless maybe you're on it constantly, with a hundred different saved searches going, and you're willing to shell out for them at closing time!). Like collecting fossils in the field, when you find a honey hole you're not going to be quick to divulge it to others - better to buy them and retail them on the auction site for a profit and keep the best one of each for your own collection!

 

I mean, I'm in China, so... :headscratch:We're going to have to hear from Marc himself!

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connorp
7 hours ago, Wrangellian said:

OK... I don't have very many and probably none that haven't already been shown (in better examples)..

I won't include the few trilobite relatives I have from Chengjiang (Naraois, Misszhouia).

I may not have all the info correct ..so corrections or additional info would be appreciated!

 

 

5cf9fa99d6625_Arthricocephalussp.thumb.jpg.e9358ccb605f2e58388662b007549672.jpg

Arthricocephalus sp.

M. Cambrian (what stage?)

(what formation?)

(what town?) Guizhou, China

 

5cf9fa9c81e42_Changaspiselongata.thumb.jpg.84a56d0b03589bf9a3b582f0c7991aea.jpg

Changaspis elongata

M. Camb.

Same formation/location as above

 

5cf9fba6c47a4_Maotuniasp.thumb.jpg.ee967315a7fac3e61902928a1d28396b.jpg

Maotunia sp. + brachiopods

Mid Cambrian (what stage?)

Zhangxia Fm

Linyi, Shandong, China

 

5cf9fc11cc936_Amphotondeois.thumb.jpg.d714695ec8aab830dcb0d3dca241a620.jpg

Amphoton deois

Same formation/location as above

(I think I was to receive another one of these but they sent me some Pliocene crabs instead.)

 

More coming... please hold off till I'm done!

The first two are possibly from the hotang Fm.

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Wrangellian

Thanks, I'll note that on the labels. :tiphat:

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Wrangellian
18 hours ago, Sinopaleus said:

 

Great fossils! That's a great Ductina specimen :) 

Thanks! It looks like the front end has split apart some? But pretty good. There was a choice of them so I chose what I thought were the best two.

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MarcusFossils
19 hours ago, connorp said:

The first two are possibly from the hotang Fm.

 

My guess would have been that they're both from the Early Cambrian Balang Formation, but you may be right. I've never heard of the Hotang Formation 

 

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connorp
4 hours ago, MarcusFossils said:

 

My guess would have been that they're both from the Early Cambrian Balang Formation, but you may be right. I've never heard of the Hotang Formation 

 

That’s just what I found by looking at similar specimens for sale on the web. But you may be right, I have not been able to find any references to the Hotang formation in literature. It may be an old name for a formation that has since been renamed.

 

However, a look at FossilWorks for both species shows that they are both present at a wide range of localities. So I’m not sure I’d definitively write down a formation @Wrangellian. However, it looks like all specimens are listed as coming from Cambrian Series 2. I think that’s the most you can be certain about.

 

I’ve found that a lot of Chinese sellers have more detailed information on the localities specimens were found at, you just need to explicitly ask them because it’s rarely in the actual listing.

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piranha

Arthricocepahalus and Changaspis occur above the Hotang in the Dachenling Formation:

 

Lu, Y., Lin, H. 1989

The Cambrian Trilobites of Western Zhejiang.

Palaeontologia Sinica, New Series B, Whole Number, 178(25):1-287

 

image.thumb.png.8e2ff74e8096f71987fbd2256ce6bfda.png

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MarcusFossils
On 2019-06-07 at 7:46 AM, Sinopaleus said:

 

 

I mean, I'm in China, so... :headscratch:We're going to have to hear from Marc himself!

 

It's just a matter of knowing the right people ^_^

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Wrangellian
7 hours ago, piranha said:

Arthricocepahalus and Changaspis occur above the Hotang in the Dachenling Formation:

 

Lu, Y., Lin, H. 1989

The Cambrian Trilobites of Western Zhejiang.

Palaeontologia Sinica, New Series B, Whole Number, 178(25):1-287

 

image.thumb.png.8e2ff74e8096f71987fbd2256ce6bfda.png

Does this mean Changaspis and Arthricocephalus are not found in the Hotang Fm?

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piranha

Correct, they are found in numerous formations in China, but evidently not in the Hotang.

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Wrangellian
18 hours ago, connorp said:

That’s just what I found by looking at similar specimens for sale on the web. But you may be right, I have not been able to find any references to the Hotang formation in literature. It may be an old name for a formation that has since been renamed.

 

However, a look at FossilWorks for both species shows that they are both present at a wide range of localities. So I’m not sure I’d definitively write down a formation @Wrangellian. However, it looks like all specimens are listed as coming from Cambrian Series 2. I think that’s the most you can be certain about.

 

I’ve found that a lot of Chinese sellers have more detailed information on the localities specimens were found at, you just need to explicitly ask them because it’s rarely in the actual listing.

 

6 hours ago, piranha said:

Correct, they are found in numerous formations in China, but evidently not in the Hotang.

I had a look at 'Changaspis elongata' on FossilWorks, and it says "Distribution: found only at Wuliu-Zengjiayan section, upper Tsinghsutung Formation " (Guizhou, I gather)... Is this old information, and it has now been found at more locations? Also note the different formation name.

Or maybe my specimens are not elongata...

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Sinopaleus

IMG_8864.thumb.jpg.b743c0c997f58bcabcde54414b40446b.jpg

Duyunaspis duyunensis (Meraspid, Juvenile, Stage 7)

Middle Cambrian

Balang Formation, Duyun, China

 

IMG_1673.thumb.JPG.52095510129b4fe347e5da0a10384697.JPG

Nileus sp

Middle Ordovician

Dawan Formation, Huangping, Guizhou, China

 

P6040049.thumb.JPG.3533fa0c3d46bb2352cb64afcc0bfba7.JPG

Oryctocephalus indicus

Middle Cambrian

Kaili, Guizhou, China

 

P7060024.thumb.JPG.2a2e2f61a9d1a6f3e1ed4b4c30b545d3.JPG

Ductina vietnamica

Middle Devonian

Nandan, Guangxi, China

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piranha
On 6/6/2019 at 11:13 PM, Wrangellian said:

5cf9fed8d9181_Coronocephalusgaoluoensis.thumb.JPG.20958ea6893c8329faec16992c5a06a7.JPG

Coronocephalus gaoluoensis

Silurian - Wenlockian?

(what formation?)

Mtns of western Hunan, China

 

Coronocephalus gaoluoensis

Silurian - Llandovery (Telychian) - Xiushan Formation

Wanmin, Yongshun County, Western Hunan Province

 

Chen, G., Han, N., Luo, R. 2012

Restudy of Coronocephalus gaoluoensis WU, 1979.

Acta Palaeontologica Sinica, 50(3):284-303

 

On 6/6/2019 at 11:13 PM, Wrangellian said:

5cf9fede1af0d_Ductinax2.thumb.JPG.bcf95fbc75b1134c7c32423aeab9a045.JPG

Ductina vietnamica + styliolinids

M. Dev. - Eifelian

Nandan Fm

(what town?), Hunan, China

 

Illaenula vietnamica

Lower Devonian (Emsian) - Tangding Formation

Luofu District, Nandan County, Guangxi Province

 

Chlupac 1977 established the subgenus Illaenula but there are published papers in China that have continued to classify it as Ductina.  Han & Chen 2007 cited Chlupac 1977 and discussed the species concept of Ductina but did not use the name Illaenula.  As the overall consensus of literature follows Chlupac 1977, including Jell & Adrain 2003, Illaenula is the preferred classification.

 

Han, N., Chen, G.Y. 2007
Moulting variability in the Middle Devonian trilobite Ductina from Nandan, Guangxi, China.

Acta Palaeontologica Sinica, 46(2):167-182

 

Chlupáč, I. 1977

The Phacopid trilobites of the Silurian and Devonian of Czechoslovakia.

Rozpravy Ústředního Ústavu Geologického, 43:1-172

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Wrangellian

Thanks again, Scott. It would have taken me hours of sleuthing to find that info, if at all.

 

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Tidgy's Dad

I'm going to have to stop reading this thread. 

I am thinking jealous thoughts. 

Which is not good as I have many lovely specimens.

But not from China. :envy::ninja:

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