Fossil???

[Godofgods]

Hi everyone, do you think this is a fossil? It comes from a formation rich in cephalopods of Lower Jurassic.

 

 

 

 

4 cm long

 

 

[Miocene_Mason]

I’m stumped. Looks like a fossil but not any cephalopods I’ve seen. I’ll see what others say

[andreas]

Lamellaptychus I think

[Miocene_Mason]

3 minutes ago, andreas said:

Lamellaptychus I think

I didn’t know they could that long, learn something new every day.

[Tidgy's Dad]

Or part of a pelecypod shell.

[Manticocerasman]

I also think this could be an Aptychus.

[Ludwigia]

+1 for Lemellaptychus.

[Godofgods]

I saw some photos of Lamellaptychus on internet and I think it is Lamellaptychus.

Thank you very much

[abyssunder]

It might be Lamellaptychus. The ribbing pattern is typical for the genus, also its occurrence is well known from the Bajocian–Valanginian of the Tethyan Realm.

 

excerpt from P. Zell et al. 2016. Late Jurassic aptychi from the La Caja Formation of northeastern Mexico. Bol. Soc. Geol. Mex. 68(3): 515-536

[Godofgods]

On 18 febbraio 2018 at 9:51 PM, abyssunder said:

It might be Lamellaptychus. The ribbing pattern is typical for the genus, also its occurrence is well known from the Bajocian–Valanginian of the Tethyan Realm.

 

excerpt from P. Zell et al. 2016. Late Jurassic aptychi from the La Caja Formation of northeastern Mexico. Bol. Soc. Geol. Mex. 68(3): 515-536

Thank you

[MeargleSchmeargl]

On 2/18/2018 at 1:12 PM, andreas said:

Lamellaptychus I think

I agree they look similar.

 

 

Maybe a prep job to reveal some more...?