ID of Silurian nautiloids and gastropods

[PaleoOrdo]

 

Near the shores of the south-eastern Randsfjorden in Norway is a loaction with an Early Silurian outcrop. Last summer I found some gastropods and this nautiloid in a road-cut on a rock which seems to be sandstone, of very hard material. It seems to be an orthocone, although very slightly bended with the siphuncle visible on the top cross-section, placed in a semi-central position. Could it be possible find out which order and family it belongs to? I guess it is not an endoceras, because the siphuncle is not very large. The lenght of the speciemen is about 12cm.

 

 

 

 

At the same location I found a very beautiful rock with several animals, two nice gastropods, which I not know the order of, and one or two other nautiloids. The rock is about 7cm broad.

 

 One big and one very small gastropod:

 

 

Edited January 31, 2022 by PaleoOrdo

[Fossildude19]

Gastropods in cross section are nearly impossible to identify confidently, unless you know what genus/species have previously been found at the site. 

[PaleoOrdo]

I understand, they look too similar in that appearance. I will try find out if there are any litterature on this formation.