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Back to the late Devonian with a touch of Cretaceous.


Manticocerasman

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Last weekend  we made a trip to my favorite Devonian hunting spot.

As usual we found a few goniatites, but apart from this we found a lot of smaller fossils like brachiopods, crinoids and even a bivalve. and a few other nice surprises.

 

The small bivalve:

glyptohallicardia sp.

2 valves and pyritised, only a few mm wide with bot halves preserved.

IMG_20190305_110857.thumb.jpg.d1af3a6f878def14c03057ef1d5da6f3.jpg

 

 

a very nice crinoid calyx :)

5c7e61cb59bc8_IMG_20190305_070531(1).thumb.jpg.1c49c8b43a001fb53f290073aca44285.jpg

 

 

a tiny brachiopod ( Lingula )

IMG_20190304_181542.thumb.jpg.80b6e36899060e3d0c2043af7d3a7350.jpg

 

One of the best finds of the day was a fish tooth, I’m still unsure on the species, but I think something in the area of a Euchondrocephalid like Helodus. It the my oldest tooth in my collection :D

5c7e61c9b4e82_IMG_20190304_171609(1).thumb.jpg.c1bc91f0ef86af1482e56cfbb9dca486.jpgIMG_20190304_171423.thumb.jpg.a42bd8a4c87edf098a66c412ca1af3ef.jpg

IMG_20190304_171357.thumb.jpg.db0f18e20339ce8c8ad83e4003ebff99.jpg

 

Still, I did find an even better fossil , I’ll let you speculate on what this might be, but for now it is packed in the trunk of my car and I’m going to drop it off to the local institute ;)

5c7e61c664860_IMG_20190302_112606(1).thumb.jpg.fd7793b906dd4e423bdbd07d49b93f9a.jpg

5c7e61c4ed4c5_IMG_20190302_112116(1).thumb.jpg.d5c535aed37d487665a3287dbc430d61.jpg

 

 

 

 

Halfway on the way back home we spotted a construction site with a little bit of chalk coming out of the ground, we stopped for a prospection and came back with a few incomplete echinoids and 2 belemnites . So it is always worth to stop at an interesting looking spot :)

IMG_20190305_071041.thumb.jpg.7bfd6d5be3d3c7298355cefbd8cbfc95.jpg

 

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Could this be a small placoderm jaw? I used to find similar ones in the Devonian of Iowa.

tooth.jpg

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8 minutes ago, Al Dente said:

Could this be a small placoderm jaw? I used to find similar ones in the Devonian of Iowa.

 

Hmm mabey, I was more inclined to think it was primitive shark tooth, it seems to have some enamel . but any insight is welcome :-) 

 

growing old is mandatory but growing up is optional.

 

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It might be a conodont, part of a “worm” jaw. What is the scale?

 

8CEBBDFE-DE05-4E80-901A-7D8726E1460C.jpeg

 

https://www.slideshare.net/mobile/kristinsheaffer/conodont-species

 

02378C0E-703F-458F-8864-7A35228C1B1B.png

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Very nice finds! :)

I really like the crinoid and tooth, but the bivalve and the inarticulate brachiopod are gorgeous.:wub:

Always great to find a few bonus items when you make a speculative stop as well. 

Is the mystery item the scale of a fish? 

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16 minutes ago, Tidgy's Dad said:

Very nice finds! :)

I really like the crinoid and tooth, but the bivalve and the inarticulate brachiopod are gorgeous.:wub:

Always great to find a few bonus items when you make a speculative stop as well. 

Is the mystery item the scale of a fish? 

Thx Adam, 

it is not a fish scale, but you are on the right track, think bigger ;) it is in the 3 big blocks right of the hammer, 2 of them are the positive and nagative. the 3d block on the right is coverd in mud, but contains more of the fossil.

growing old is mandatory but growing up is optional.

 

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2 hours ago, Manticocerasman said:

Hmm mabey, I was more inclined to think it was primitive shark tooth, it seems to have some enamel . but any insight is welcome :-) 

 

Here are a couple photos from the internet. Does your tooth have the same parallel rows of dots that you can on the first photo?

 

 

jaw1.JPG

jaw2.JPG

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Very nice finds, congrats. I am not going to speculate because the truth is I have no clue what it can be but can't wait to find out :popcorn:

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1 hour ago, Al Dente said:

Here are a couple photos from the internet. Does your tooth have the same parallel rows of dots that you can on the first photo?

 

 

 

 

It looks like there are dots on it, but realy small, I cant make out if they are in rows.

 

I'll have it check out at the local museum by a Devonian fish specialist. :)

 

growing old is mandatory but growing up is optional.

 

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Just now, Manticocerasman said:

It looks like there are dots on it, but realy small, I cant make out if they are in rows.

 

I'll have it check out at the local museum by a Devonian fish specialist. :)

 

 

43 minutes ago, rebu said:

Very nice finds, congrats. I am not going to speculate because the truth is I have no clue what it can be but can't wait to find out :popcorn:

 

1 hour ago, Tidgy's Dad said:

Placoderm? 

Yes an arthodire Placoderm, and a realy big one :D 

the split rock is a plate from around 35cm long on 25 cm wide and there is more in the other rock.

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Just now, Manticocerasman said:

 

 

Yes an arthodire Placoderm, and a realy big one :D 

the split rock is a plate from around 35cm long on 25 cm wide and there is more in the other rock.

Congrats! Great find.

And do I win a prize? ;)

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14 minutes ago, Tidgy's Dad said:

Congrats! Great find.

And do I win a prize? ;)

I can send you pictures of brachiopods :P 

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6 minutes ago, Manticocerasman said:

I can send you pictures of brachiopods :P 

Yes, please!:D

Life's Good!

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16 minutes ago, Tidgy's Dad said:

Yes, please!:D

 

 

There you go: those are the ones I found on this fieldtrip. ( Atripa, Athirys, rhynchonellids,... )

IMG_20190305_190848.thumb.jpg.ee628fbad78eae1db06262ff0c8694fc.jpg

 

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I'm with Adam - the pyritized bivalve and brachiopod are exquisite!!!  Congratulations on your great finds, including the tooth and placoderm piece!!! 

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Are the parallel ridges of the placoderm plate surface ornamentation or internal structure? I assume this is near-shore marine? It must be pretty close to the Devonian tetrapod sites? 

 

Great finds! I am sitting here in Massachusetts looking out over a very white landscape with wind-chill about 3oF (-18oC)!

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On 6-3-2019 at 11:34 AM, Monica said:

I'm with Adam - the pyritized bivalve and brachiopod are exquisite!!!  Congratulations on your great finds, including the tooth and placoderm piece!!! 

Thx Monica :)

 

22 hours ago, Paul1719 said:

Are the parallel ridges of the placoderm plate surface ornamentation or internal structure? I assume this is near-shore marine? It must be pretty close to the Devonian tetrapod sites? 

 

Great finds! I am sitting here in Massachusetts looking out over a very white landscape with wind-chill about 3oF (-18oC)!

the parrallel rideg are both internal and external, those placoderms lack any kind of ornamentation. the deposits ar reef lagunes. the reef itself is visible in the quarry.

There are no tetrapod sites in our area.

 

 

1 hour ago, smt126 said:

Awesome find on the placoderm, that matrix looks hard for prepping

Thx :) 

Yes it is extremely hard matrix. I'm donating the pieces to our local institute, they have propper tools to remove it from the rocks.

 

 

growing old is mandatory but growing up is optional.

 

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preppwork on a little goniatite that I found on this fieldtrip.

It is strange to see only a small part pyritised.

 

IMG_20190305_194550.thumb.jpg.86f92b423d4e488591e3055f2d4805a6.jpg

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