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Fish in a nodule


Coco

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Hi,

 

This fish is Laure's one, Greg's wife (see in my signature).

 

She received it without any information. At first she thought of a fish of Brazil,  Santana Formation, Araripe : Rhacolepis buccalis, but the fins arrangement seems not to be good and the jaw either. The real color is ochre and not grey.

 

474136PoissonLaure1.jpg

 

717029PoissonLaure2.jpg

 

687874PoissonLaure3.jpg


780420PoissonLaure4.jpg

786927PoissonLaure5.jpg

942749PoissonLaure6.jpg

 

Is someone able to help us ? Thanks to you !

 

Coco

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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Hi Coco,

It still looks rather typically like a fish from the Romualdo member of the Santana formation, I would suggest it may be the somewhat less common Branerion. Please compare, what do you think? 

 

What is really cool about the limestone nodules from this unit (assuming it is from where I think it is) by the way, is that they are - I believe - the youngest known occurrence of Orsten-type exceptional preservation; its to be expected that there are tissues softer than bone and scales, once belonging to this fish, that may have been replaced by solid fluorapatite. Its not unreasonable to expect preservation of muscles, tendons, and perhaps even some organs. Every nodule from this place is a potential treasure trove for science!

 

kind regards, Mark

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Hello Coco,

Mark was correct. ;) 

This is a Brannerion sp.  

The formation information sounds correct. :)

 

Brannerion.JPG

This is one of the nicer ones I've ever seen.

Regards,

  • I found this Informative 3

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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50 minutes ago, Doctor Mud said:

Beautiful!

great that you have both sides.

do these normally split like this?

 

Yes, they do.

Often, some of the nodules from other geological members will be a bit more 3-dimensional in preservation.

 

Many sellers nowadays sell each half individually, to maximize their profit. 

Regards,

 

  • I found this Informative 1

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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Oh, thank you both for the fast ID, and thanks Dr Mud and RJB for congrats (it isn't mine...).

 

I have forgotten the size : 19 cm - 7" 1/4.

 

Coco

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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Laure is anxious to thank you warmly for your help in the identification of her fish, she is very happy to know its genus.

 

Coco

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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