Northern Switzerland Jurassic Excursion

[-AnThOnY-]

The first week of June I managed to break away from a European excursion with my wife to do a couple hours of collecting in northern Switzerland! We found a boatload of late-Jurassic (Birmenstorf-Member) ammonites and one nice echinoid which should be awesome with some prep! Funny part, on the drive back my wife mentions finding an ammonite that looked like there were nipples on it. Not until we get back to the apartment and start cleaning things off do I discover it was the echinoid she was talking about! *shes a rookie  

 

 

I could use some help with ID confirmation and IDs in general.

 

Taramelliceras callicerum

 

Ochetoceras canaliculatum

 

Paracidaris blumenbachii

 

Trimarginites arolicus (easy because of the grooves on the keel)

 

These have fine ribs, are super thick relative to size but have goniatite type 'sutures' thoughts? (I dont think the far right one is equivalent, i have some other pictures of that one)

 

Assumedly all of these are Perisphinctes, but I cannot tell the difference between all of those ribbed ones to save my life. They may need some prep to help determine

 

Fatter, round keel. Glochiceras?

 

There are quite a few that look like Trimarginites but have smooth keels. Thoughts? Are they just more weathered potentially hiding the grooves on the keel?

 

These, from the paper most closely resemble Glochiceras crenatum but I dont feel like that specimen is closely enough related. I would think those spines along the keep would be easy to ID.

 

One more, its a bid weathered but I figured someone might recognize it. Has some decent sized spines along the edge of the keel (arrows)

Euaspidoceras oegir, maybe?

 

Thanks for any help!

 

[belemniten]

The first two images look kinda familiar  

Hopefully someone can help you on the ID! 

[-AnThOnY-]

8 minutes ago, belemniten said:

The first two images look kinda familiar  

Hopefully someone can help you on the ID! 

Shh, dont tell, I stole them because my phone was almost dead so I didn't have mine to upload  same-same, but different

[JustPlainPetrified]

Aren't ammonites just the most fun pieces to find? I don't know what it is about them, but their design has always intrigued me. Thanks for sharing and keep up the fossicking.

[ynot]

Nice finds in a beautiful place to hunt!

Thanks for sharing.

[caterpillar]

 

Maybe Creniceras

[-AnThOnY-]

5 hours ago, caterpillar said:

Maybe Creniceras

 

That looks like it. Nice! Thanks! 

[Ludwigia]

Looks like you were at Liesberg. Good finds considering the situation there. The ones that look goniatitish are probably Rasenia. These growth furrows are typical for late Jurassic ammonites. Rather than Glochiceras, I'd look more in the direction of Taramelliceras/Metahoploceras for those 5. The "Trimarginites" could also be Streblites and/or Glochiceras. Your crenatum is either Coryceras or Creniceras, depending on the stratigraphy. Coryceras: Kimmeridgian, Creniceras: Oxfordian. Your "Euaspidoceras" is too indistinct for me to make an educated guess.

[jpc]

3 hours ago, Ludwigia said:

Looks like you were at Liesberg. Good finds considering the situation there. 

That doesn't look like Liesberg to me.  The dip of the rocks compared to the geography pf the quarry in the first picture is off.  I have never found ammonites like these at Liesberg, but then I could be looking in the wrong beds.  Roger, I am intrigued by you comments on "the situation there".  What is the situation at Liesberg?  

 

AnThOnY... do you mind if we ask where this is? 

 

 

 

 

[Ludwigia]

2 hours ago, jpc said:

That doesn't look like Liesberg to me.  The dip of the rocks compared to the geography pf the quarry in the first picture is off.  I have never found ammonites like these at Liesberg, but then I could be looking in the wrong beds.  Roger, I am intrigued by you comments on "the situation there".  What is the situation at Liesberg?  

 

AnThOnY... do you mind if we ask where this is? 

 

 

 

 

Maybe I'm wrong since I was only there once a few years ago and just found one belemnite. What I meant was it's an abandoned quarry and natural reserve. I'd forgotten about the stratigraphy and you're probably right about the fauna. Just checked again to see that only Oxfordian and Callovian is exposed there.

[belemniten]

@Ludwigia no he was in Holderbank. Here is a small but good pdf with some fossils from there:

http://www.mffa.ch/Begleitheft zur Exkursion.pdf

[jpc]

I have been planning a trip to this quarry next time I get over there (my family is in Switzerland), so it is nice to see fossils form there.  

[-AnThOnY-]

On 7/5/2019 at 4:30 PM, jpc said:

I have been planning a trip to this quarry next time I get over there (my family is in Switzerland), so it is nice to see fossils form there.  

 

Indeed Holderbank, well worth it. We were only there for about 2 hours and left with ~50 ammonites and the one nice echinoid. More time would have, i'm sure, led to more finds (shark teeth, other echs, etc....)

 

I didnt find any complete belemnites which surprised me, just a couple pieces.

 

I meant to see if I could get permission to the quarry site across the river, but didn't get around to it. May be worth looking into, looks like some good weathered material in the back from satellite images.

[-AnThOnY-]

On 7/5/2019 at 8:03 AM, Ludwigia said:

Looks like you were at Liesberg. Good finds considering the situation there. The ones that look goniatitish are probably Rasenia. These growth furrows are typical for late Jurassic ammonites. Rather than Glochiceras, I'd look more in the direction of Taramelliceras/Metahoploceras for those 5. The "Trimarginites" could also be Streblites and/or Glochiceras. Your crenatum is either Coryceras or Creniceras, depending on the stratigraphy. Coryceras: Kimmeridgian, Creniceras: Oxfordian. Your "Euaspidoceras" is too indistinct for me to make an educated guess.

 

Thanks! I will take a look through these and compare!

[Monica]

Amazing finds, especially the echinoid!!!  Congrats!!!