It is Orthoceras, likely Devonian.

Hi Atila,

yes this is Orthoceras (or Orthocycloceras according to some taxonomists) a nautiloid cephalopod. Thus it is a relative of belemnites.

Best wishes,

Dieter

Nautiloideos me parecen.

Saludos.

Enrique

Yes and no. These fossils are indeed cephalopods, like cuttle-fish or Belemnites or Ammonites. You can see however that they are transversaly walled. Thus they correspond to what is called the phragmocone by the belemnites, not to what is usually from belemnites, i.e. rostrum. Orthoceras do not exist anymore, they dissappeared at the end of the Palaeozoic.

Thanks, guys!!

Im my opinion they are nautiloid cephalopods mostly Arionoceratids

Hi Atila

Dear all

Attaching a specimen in our local museum, maybe they are same kind of fossils.

I work on dinosaurs

Orthoceras or related orthoconic nautiloid ;  probably from Ordovician or Silurian. The fossil markets in Maroc  are full of these.

Dear Atila,

these specimens are not belemnites because they are without rostrum. They are nautilods (Cephalopoda), probably orthoceratids. Among fossil collectors, the orthoceratids from Devonian - Silurian of  Morocco are famous. 

Best regards,

Riccardo

Atila:

Not Belemnites. Orthoceras. Kindly see link:

https://www.google.co.in/search?q=Orthoceras+pictures&newwindow=1&biw=1600&bih=775&tbm=isch&imgil=xNR7HakUDG4bsM%253A%253BDGtEbRA8WPIByM%253Bhttp%25253A%25252F%25252Fwww.123rf.com%25252Fphoto_818887_fossil-of-ancient-cephalopod-orthoceras-of-the-devonian.html&source=iu&pf=m&fir=xNR7HakUDG4bsM%253A%252CDGtEbRA8WPIByM%252C_&usg=__GadQA5Khgqh3zXAFACQox_TVzs4%3D&ved=0ahUKEwif-Lzt3ZLPAhVKH5QKHcpSCX0QyjcINg&ei=gkrbV5-vJMq-0ATKpaXoBw#imgrc=xNR7HakUDG4bsM%3A

Best

Syed

Not belemnites. They have a phragmocone and they must have been orthoceratids.

Orthoceras....

Hi Atila,

Nautiloids, possibly Ordovician to Devonian in age.  

Note that in the photo all the cones are nearly aligned - this suggests that there was some depositional dip when they were deposited on the sea floor and probably some current.  

The cones open to the base of the picture, suggesting the up dip of the slope is to the top of the picture.  

I have seen similar occurrences in Late Devonian limestone in the Canning Basin of Western Australia, where they are seen on bioherms.

Ciao

John

Hi Atila,

of course orthoceratids.

SALUTI

Vittorio

Yes, they look like late Silurian Orthoceras from just east of Erfoud, Moroco.

Dear Atila - I think the white ones in my plate including the reddish one are belemnites. Do you agree?

I got these pictures in the entrance to a restaurant in Saskatoon, Canada. I don't know where they got them from. They seem to be very like yours Atila Darosa

Buenas Miguel, esos fósiles que tienes ahi son Ortocerátidos, no Belemites, se trata de fósiles paleozoicos, no mesozoicos, que es el período donde habitarion los belemites.

Los ortocerátidos se distinguen de los belemites en que el fósil de un ortocerátido presehta una división en cámaras interna, debida a que se trataba de un cefalópodo que daría origen a los famosos amonites, los fósiles de este grupo se corresponden con la concha externa de estos animales, y las cámaras que aparecen les servían para regular la profunidad a la que deseaban nadar, estos habitaron los mares del ordovícico al triásico.

Los fósiles de belemites tienen una forma mas parecida a la de una bala, con una parte recta y una punta acusada en forma de pico o de píldora, además de dos apéndices en la parte inferior en forma de antenas,generalmente abundan en sedimentos del Jurásico y se trataba del esqueleto interno del cefalópodo, algo así como la concha de las modernas vieiras.

Espero que esta información te sea de ayuda.

Enol Iglesias Casas

No, these are nautiloid shells.

they are indeed orthoceratifds from thé Paleozoic

Ok!

Paleozoic orthoceratids beyond any doubt. They are very well known abundant fossils: straight shell, septate, siphuncle