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RJB

pyritized ammo's

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RJB

I ran into these the other day and have no idea where I got them.  I got these many many years ago.  Im hoping someone can tell me more info?  I know, tuff to tell without formation and all that, but really have no idea.  Im thinking north africa?  Gots about 200 or 300 of these little things.  I dont want them, just tryiing to figure out all the info so i can sell them. 

 

RB

DSCN1333.JPG

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KimTexan

Looks like quite a nice lot. Have no clue on the ID though or where they came from.

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Heteromorph

I could be very wrong, but some of the ones closest to the camera appear to be of the genus Hildoceras. 

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taj

Yep Toarcian definitively . Could come from the center of France ( Causses , Aveyron?)

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mattbsharks

some look like they may be from the UK lyme regis area

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coled18

I have no idea about them, but where could I buy some? Some of them look like really cool specimens. 

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westcoast

How can you not remember a box full of pyritised ammonites! You clearly have way too many good fossils ☺

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JohnBrewer
17 hours ago, mattbsharks said:

some look like they may be from the UK lyme regis area

Really? 

 

Look like Aveyron to me. 

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abyssunder

From Another Galaxy? :)

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ynot

I think a better picture of a few of the uncleaned ones may help with determining the location of origin.

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KimTexan

Sounds like we need @fifbrindacier‘s thoughts. Isn’t she from France and into ammonites among other things?

 

RJB sounds like you have some interested clients already.

I 2nd @nimbus‘s response :drool:, but I think there may be others who didn’t admit to drooling yet.

Yes, I also wonder how you could possibly forget you have a box of these just laying around. Clearly you have too many good fossils to handle on your own.:P

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mattbsharks
7 hours ago, JohnBrewer said:

Really? 

 

Look like Aveyron to me. 

You have me pegged for someone far more knowledgeable in ammonites than I in fact am :P. Lyme regis is just the only place with pyrite ammonites I could think of

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doushantuo

Tragiphylloceras,Calliphylloceras,Hildoceras,Leptechioceras,Radstockisceras,Polymorphites,Uptonia,Tropidoceras,Liparoceras,Becheiceras,Beaniceras

Androgynoceras,Amaltheus and about fifteen others are possibilities

 

edit: I'll let it stand,but I'm not happy with the post*,even before the remark made below by Ludwigia.

*with the provenance not known,it was not entirely sensible to post 

 

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Ludwigia
4 hours ago, doushantuo said:

Tragiphylloceras,Calliphylloceras,Hildoceras,Leptechioceras,Radstockisceras,Polymorphites,Uptonia,Tropidoceras,Liparoceras,Becheiceras,Beaniceras

Androgynoceras,Amaltheus and about fifteen others are possibilities

For France, or for the whole world? I don't see any Pliensbachian or Sinemurian ammos in the photos.

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Shamalama

I'd go with @Ludwigia as far as possible provenance. It is my understanding there are a few layers across Europe and N. Africa that produce pyritized Ammonites so the best bet is to try and ID a few species and see if you can narrow down the locality. Just as an example, @Robert Field posted about a trip to Villers sur Mer in NE France where he found pyritized ammonites in the Oxfordian stage clays: 

 

 

With Ludwiga suggesting Toarcian (about 180 mya) and the Oxfordian being about 160 mya you have a wide range. I have specimens from both locations in my collection (thanks @nala!) and have yet to ID all of them. Post some closer photo's of several different types and the experts here can take a crack at identifying them.

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JohnBrewer
17 hours ago, mattbsharks said:

You have me pegged for someone far more knowledgeable in ammonites than I in fact am :P. Lyme regis is just the only place with pyrite ammonites I could think of

The pyritised ammos from Lyme/Charmouth preserve slightly differently, well the ones I have found. A lot of the ammos from there are from the beef layers. :) 

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fifbrindacier

I think pics of the hinge and apertures, mostly of the more preserved ones, would help precise their identification. I'll follow @Ludwigia on this.

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