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Fossils From B. C.


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#161 Wrangellian

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Posted 03 June 2014 - 02:27 PM

I'd say most of us are in the same boat, but I would have thought that did not include the people at the museum (it's like they have only had the time or ambition to put a temporary, half-researched ID on things)... but I guess nobody had the kind of knowledge that Andreas has for Tri. ammos! -Likewise Scott for trilos.


Edited by Wrangellian, 03 June 2014 - 02:28 PM.


#162 andreas

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Posted 03 June 2014 - 02:34 PM

It's odd. There are 3D specimens that have weathered out, in other people's collections (this is my only example from that spot) - but I have seen 2 different IDs on them in the same display case!

Hi Eric,

 

I am curious what ID you have seen for the roundish ammonites. It is possible that there were two different genera in this diplay case which look only for you identical. Globose(roundish/sphaerish) ammonoids are very hard to ID. In Tuvalian time it can be Arcestes, Bacchites, Isculites or Indonesites. Didymites occurs later, it has a short occurence in Norian time/Alaun 1/ bicrenatus zone.

 

When shell is missing or preservation is bad, the suture line of the ammonoid is the best way to get an ID.

The suture pattern(Lobelines) are only visible at the surface of the inner core(phragmocone). Try to polish the surface. Then you can compare the lobes with the above named genera. Please do not grind to deep because the deeper you grind the more simply the lobes look.

 

@ Ed, IDing was tough for me too when I started with triassic ammonoids. Be sure that there are specialists out there with the same problems.

The main problem is that Triassic ammonoids are scarce to see/find and that there is a bunch of older literature/names all over the world that nobody will review because it is too much work.

Thank you for your nice comment in my gallery!

 

kind regards

Andreas

 

Eric, just read your recent post. I only know a little about upper Triassic ammonoids. This is maybe one third of all Triassic ammonoids. And from this third mostly the tethyan ammonoids and from the tethyan ammonoid only the ammonoids of the Alps. This is far away from good knowledge  :)


Edited by andreas, 03 June 2014 - 02:58 PM.


#163 Wrangellian

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Posted 03 June 2014 - 03:53 PM

One was Arcestes, I don't remember the other one, My memory is not so good! Should have written it down but I had nothing handy to do so.

I don't have any specimens to spare nor the equipment to prep out the sutures, otherwise I might try that. I don't think anyone at the museum has done this, either - I only saw weathered-out specimens and sliced ones, and I believe they are probably the same.

Anyway, you're the most knowledgeable person I know for Triassic ammos in general! If you don't know it, you know the resources to find out.



#164 FossilDAWG

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Posted 04 June 2014 - 04:01 PM

With Triassic ammonites there are several that look very similar. Makes it tough for guys like myself to post them in a gallery where Id is required... The Id in my gallery is just a guess based on pictures and what I can find to read. I would hate to guess how many others are the same.

Cheers

ED

Ed, I think you're making fantastic progress IDing your material.  I remember when you first started to post, and claimed to have little interest in putting names to fossils.  It's astonishing how far you've progressed since then.

 

Don



#165 Auspex

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Posted 04 June 2014 - 04:07 PM

... It's astonishing how far you've progressed...

Ditto, with Kudos!


"There has been an alarming increase in the number of things I know nothing about."
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#166 Fossildude19

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Posted 04 June 2014 - 06:39 PM

Ed, 

 

I agree with the others - you have come a long way. :)

 

It doesn't have to be about big words, or scientific names, but, ... I think that when you collect, and actually love doing so, there comes a point when it becomes important to know what you are collecting, not for other's sake, but purely to satisfy your own curiosity of how, why, when, and what, about the fossils we find.

Glad that you stuck it out here, and are sharing your amazing fossils with us, still. Thanks for taking the time to do so.

I enjoy seeing your finds, immensely. 

Regards,


Tim
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#167 squalicorax

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Posted 04 June 2014 - 10:45 PM

Most excellent finds Mr ed as always. Those triassic ammonoids are stunning.

My Flickr Page of My Collection: http://www.flickr.co...424101@N00/sets


#168 Ludwigia

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Posted 02 July 2014 - 12:25 AM

Now that's a humdinger, you lucky guy! Perseverance pays off!


Greetings from the Lake of Constance. Roger


#169 Wrangellian

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Posted 02 July 2014 - 04:32 AM

In the roadbed?? This is at your Jurassic site I take it?



#170 fossisle

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Posted 02 July 2014 - 09:08 AM

Ok Mr Ed now I am super jealous!!

Those kind of finds are the sweetest!!


Cephalopods rule!!

#171 Fossildude19

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Posted 02 July 2014 - 12:54 PM

Every time I think I've seen it all from your area, you keep finding more breathtaking fossils!

Fantastic, Ed!

Regards,


Tim
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#172 Ludwigia

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Posted 03 July 2014 - 03:17 AM

Ed, I can't remember if you have air pen and abrader yet. If not, I'd suggest you hold off on the prep with the one in post #375 until you find someone who can do it for you. I think it could very well be worth it.


Greetings from the Lake of Constance. Roger


#173 Fossildude19

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Posted 07 July 2014 - 06:59 AM

Wow!

I'll say you did well! 

:popcorn:  :popcorn:  :popcorn:

Regards,


Tim
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#174 Ludwigia

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Posted 07 July 2014 - 11:19 AM

Well, that's a lotta stone! There must be some nice things in there somewhere. ;)


Greetings from the Lake of Constance. Roger


#175 Wrangellian

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Posted 07 July 2014 - 03:15 PM

I love those ferns!

Too bad those ammos have soft centers. I don't know what the solution is. I've got some ammos that are inside hard limy rock - the matrix inside the ammo might be equally hard but the shell is no doubt going to be soft and flaky so I am not sure anyone will be able to prep it out without losing some shell. (I have yet to find out as I don't do any prep myself nor have asked anyone else to try one for me)






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