Trilobite ID Help

[married2rick]

I did something I was sure I never would..... I paid money for fossils. I thought I only wanted ones that I've personally found. (does "finding" on Craig's List count?)

The guy said he's had them since he was a kid, he wasn't much older than early 30's. He didn't seem to be a collector. I paid $10 for both.

He had no info on the trilobite. I know the other fossil is an Orthoceras, I'm just including a pic of it too.

This two are with no flash using my cell phone.

More pics in next post.

[married2rick]

These are taken with the flash on.

[married2rick]

No flash.

[Triceratops]

_{It looks like a Flexicalymene 'mud' trilobite form Morocco.}

[married2rick]

And the Orthoceras.

[Triceratops]

Here's a link to a previous topic on the forum about these trilobites:

http://www.thefossilforum.com/index.php?/topic/17377-ordovician-trilobites-from-morocco/

[Fossildude19]

Brenda,

I agree,... they look like Flexicalymene sp from Morocco. The cephalons are not original - they have been attached too look complete.

Sometimes they are called Flexicalymene ouzregui, (spelling?)not sure that it is a valid name for them.

Regards,

Edited April 29, 2016 by Fossildude19

[howard_l]

These are very common trilobites from Morocco in the family Calymenidae. One publication has them as "Colpocoryphe grandis – A very commonly seen beginners' trilobite (usually sold as Diacalymene ouzregui*) from the Ordovician"

[married2rick]

Thank you Triceratops!

Tim - Thank you as always!

Can you tell that they are not original by the smoothness of the cephalons?

Would you say that the Thorax & Pygidium are original?

Brenda

Edited April 29, 2016 by married2rick

[piranha]

This topic has been covered numerous times. It's not Diacalymene or Calymene. Those genera are not described from Morocco.

 

Flexicalymene ouzregui Destombes 1966

 

Destombes, Jacques (1966)
Quelques Calymenina (Trilobitae) de l'Ordovicien moyen et supérieur de l'Anti-Atlas (Maroc).
Notes et Mémoires du Service Géologique du Maroc, t.26, 188:33-52

 

 

 

[piranha]

On 4/28/2016 at 5:13 PM, howard_l said:

These are very common trilobites from Morocco in the family Calymenidae. One publication has them as "Colpocoryphe grandis – A very commonly seen beginners' trilobite (usually sold as Diacalymene ouzregui*) from the Ordovician"

 

 

Colpocoryphe grandis has smooth pygidial flanks:

 

 

 

 

[howard_l]

I am not a trilobite worker, that 's why I said it was from the family Calymenidae. Especially since this one appears to be from two individuals put together.

[piranha]

On 4/28/2016 at 5:31 PM, howard_l said:

I am not a trilobite worker, that 's why I said it was from the family Calymenidae. Especially since this one appears to be from two individuals put together.

 

 

Since you mentioned Colpocoryphe grandis, I thought it would be informative to illustrate how to tell the difference from Flexicalymene ouzregui.

 

 

 

 

[married2rick]

I greatly appreciate all the feedback! Keep it coming, lol. I love learning from everyone! Thank you!

[Guguita2104]

IMO, your trilo is a Flexicalymene ouzregui (http://www.thefossilforum.com/index.php?/gallery/album/2417-worldwide-fossils/) and the orthoconic nautiloid a Geisenoceras ( the name/genus Orthoceras is only used for the type-specie O.regulare, that's not found in Morocco- http://www.thefossilforum.com/index.php?/topic/63303-orthoceras-from-morocco/).

Regards,

Edited April 30, 2016 by Guguita2104

[erose]

And for what it matters...$10 was a very reasonable price for both. You may see them for more and sometimes for less...

[abyssunder]

Considering that we all are amateurs/professionals it is nice to have at least one of these in our collections. They looks great.

[fifbrindacier]

Since you mentioned Colpocoryphe grandis, I thought it would be informative to illustrate how to tell the difference from Flexicalymene ouzregui.

I have one that was identified as a Flexicalymene Tazzarinensis (following photos), but there were hesitations with the F. Ouzregui, do you know what makes the difference between them ?

IMO, your trilo is a Flexicalymene ouzregui (http://www.thefossilforum.com/index.php?/gallery/album/2417-worldwide-fossils/) and the orthoconic nautiloid a Geisenoceras ( the name/genus Orthoceras is only used for the type-specie O.regulare, that's not found in Morocco- http://www.thefossilforum.com/index.php?/topic/63303-orthoceras-from-morocco/).

Regards,

Thanks for that information, i didn't know that my Orthoceras of Morocco are in reality Geisenoceras (see following photos) :

[fifbrindacier]

Considering that we all are amateurs/professionals it is nice to have at least one of these in our collections. They looks great.

Yes, i agree, and 10 dollars is a good price.

[piranha]

On 4/30/2016 at 2:21 PM, fifbrindacier said:

I have one that was identified as a Flexicalymene Tazzarinensis (following photos), but there were hesitations with the F. Ouzregui, do you know what makes the difference between them ?

 

 

Here are the descriptions / figures for F. ouzregui & F. tazarinensis.

The text is French but can be copy / pasted into Google Translate.

 

Destombes1966.pdf

 

Destombes, Jacques (1966)

Quelques Calymenina (Trilobitae) de l'Ordovicien moyen et supérieur de l'Anti-Atlas (Maroc).

Notes et Mémoires du Service Géologique du Maroc, t.26, 188:33-52

 

 

 

 

[fifbrindacier]

Here are the descriptions / figures for F. ouzregui & F. tazarinensis.

The text is French but can be copy / pasted into Google Translate.

Destombes1966.pdf

Destombes, Jacques (1966)

Quelques Calymenina (Trilobitae) de l'Ordovicien moyen et supérieur de l'Anti-Atlas (Maroc).

Notes et Mémoires du Service Géologique du Maroc, t.26, 188:33-52

Thank you very much.