Some samples of the Sinemurian stage of the Jurassic period

[Svetlana]

Hello all.

After a long break, I would like to show some examples of the Sinemurian Jurassic from my collection.

The Sinemurian Stage (Sinemur) is a stratigraphic subsection, the second from the bottom stage of the lower section of the Jurassic system of the Mesozoic era. Covers time from 199.3 ± 0.3 Ma to 190.8 ± 1.0 Ma. As far as I know, these fossils are not very widespread.

 

Arietites (Coroniceras)?.. I am not sure about these ammonites

[Svetlana]

Few more Arietites + Phylloceras

[Svetlana]

Rhynchonella

[Svetlana]

Unknown one

[Svetlana]

Sometimes there are also such ammonites. 

An interesting combination of geology and paleontology: the white stripe on the ammonite is a layer of quartz.

[Svetlana]

And a great example of pyrite - unfortunately, the photos do not convey all its beauty.
 

[Ludwigia]

19 minutes ago, Svetlana said:

As far as I know, these fossils are not very widespread.

 

Well, we do have a good number of them in southern Germany and southern England has quite a few as well. Nice collection.

[Tidgy's Dad]

Lovely to see these! 

I think that Phylloceras is amazing, and I'll have to chat with you about acquiring one of those marvelous rhynchonellids at some time. 

Thanks for sharing. 

[fifbrindacier]

Nice ammonites Svletana, how many of them do you have ?