Fossils from Morocco ID

[lucas_]

I recently bought these two fossils in different shops during a trip to Morocco, an ammonite and a coral. The seller told me the ammonite (4/5 cm max) should be South-African.

Can somebody help me with the ID?

[Fossildude19]

Second item looks like a crystal/mineral, rather than a fossil.

First is an ammonoid. Not sure if ID can be established further.
Wait for other opinions, however.

[Rockwood]

The preservation of the first one will hinder an exact identification, but these look more like the simple septa/sutures of a nautiloid to me.  

I've collected modern calcareous algae that look much like the second piece. 

[Rockwood]

Just to clarify; I didn't intend to imply that this looks modern. Only to note the form and encrusting habit of the algae.

[Ludwigia]

That's definitely an ammonite, but as Tim has already stated, further id is nigh on impossible, at least without any detailed information. This could come from any place in the world, not just SA.

[Rockwood]

2 minutes ago, Ludwigia said:

That's definitely an ammonite,

How can you tell ? All I can make out looks like a simple curve.

[Ludwigia]

9 minutes ago, Rockwood said:

How can you tell ? All I can make out looks like a simple curve.

 

If you check out my "Slices" album, you'll see that many ammonite septa have this form in their phragmocone. Also, the sipho is situated ventrally as opposed to spiral nautiloids which have their sipho in the center of the whorls.

[Rockwood]

40 minutes ago, Ludwigia said:

 

If you check out my "Slices" album, you'll see that many ammonite septa have this form in their phragmocone. Also, the sipho is situated ventrally as opposed to spiral nautiloids which have their sipho in the center of the whorls.

Thanks, but to be honest the indications are still not at all clearly seen here. I see little more than crystals.  

[hemipristis]

The second item, photos 4,5,6, resembles the mineral aragonite. A form a calcium carbonate. Aragonite is the mineral that forms stalagmites and stalagtites in caves

Edited December 24, 2023 by hemipristis

[Ludwigia]

1 hour ago, Rockwood said:

Thanks, but to be honest the indications are still not at all clearly seen here. I see little more than crystals.  

 

Take a closer look at the venter in the 3rd photo and you should be able to see the brown-reddish crystalized siphuncle. At least I can see it since I've seen enough of these in my ammonites. And the center of the whorls show absolutely no sign of a siphuncle, which rules out nautilus completely as far as I'm concerned.

[Rockwood]

Yes. Thankyou. I see it now. It is very clear. Hope I helped others to learn a good lesson as well.