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This time I waded up the Krottenbach


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Ludwigia

I was in the Wutach area again. A couple of weeks ago I posted a report about my adventures in the Aubach, and today I decided to scramble up the Krottenbach in the hopes of finding some Jurassic fossils. This creek isn't quite as wild as the Aubach, so I managed within 5 hours to move upstream to the point I was hoping to reach, despite the odd tree dam blocking the way.

 

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There were 2 huge landslides which inundated the area about 60 years ago and brought down a lot of detritus from the Middle Jurassic in the cliffs on both sides of the valley, so even though that was a long time ago, there's always a chance of finding something in the creek or tucked into its slopes.

It being spring, I was also able to enjoy the budding natural scenery.

 

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Of course the froggies were also busy.

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And it looks like someone got stuck in the mud a dog's age ago.

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The area is also well-known for its huge septarians. I left it there for posterity.

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Oh yes! I also managed to find a few fossils.

 

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Now I'm curious to see how they turn out.

 

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Jeffrey P

You're not the only one curious. Great site pics Roger! Thanks for sharing.

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Looks like a fun trip! Cant wait to see those prepped. That shoe had me wondering if you ever find anything from WWII on your hunts (I know your not looking fot that sort of stuff, just curious.) :D

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Everhardus

That's one place I wanted to go to last year but we were out of time ! Finds look promising....

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Ludwigia
11 hours ago, Jeffrey P said:

You're not the only one curious. Great site pics Roger! Thanks for sharing.

It sure is a beautiful area.

 

8 hours ago, JimB88 said:

Looks like a fun trip! Cant wait to see those prepped. That shoe had me wondering if you ever find anything from WWII on your hunts (I know your not looking for that sort of stuff, just curious.) :D

I'm not conciously on the lookout for those kind of things and have never found anything. I think that the areas I scour were far away from any battlegrounds and certainly were not targets for bombings.

 

43 minutes ago, Everhardus said:

That's one place I wanted to go to last year but we were out of time ! Finds look promising....

Maybe next time in year 1 AC (After Covid)

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 A very beautiful place.  You always add great pics to your posts too.  and you came home with more goodies.  Seems like a purty nice day.

 

RB

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Ludwigia
6 hours ago, RJB said:

 A very beautiful place.  You always add great pics to your posts too.  and you came home with more goodies.  Seems like a purty nice day.

 

RB

I just like to show you guys how the natives over here live :) Yes, it was certainly a nice day. And now it's raining, so I was just in time.

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Ludwigia

I spent the better part of the afternoon working on the second ammonite I pictured above. It's a Teloceras, a genus which is a rare find for these parts, which is why I decided to tackle it first. I've only found one other in all of my years combing the Wutach and that one was missing the back half. It's turning out to be a tricky job getting it into shape, since there are a lot of cracks in it, the surrounding matrix is extremely hard, and I'm having to remove some of the outer septal walls. I finally laid it aside to continue with it tomorrow and then used up an hour to get the one finish which I'll picture below. This is the last of the ammonites sticking out of the matrix above. I'm not even sure about the genus on this one, since its shape and sculpture is somewhat out of the ordinary, so I've just sent off an id request to someone who may know better.

 

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Everhardus
10 hours ago, Ludwigia said:

Maybe next time in year 1 AC (After Covid)

I would not mind !  Nice first prep already !

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fifbrindacier
11 hours ago, Ludwigia said:

Maybe next time in year 1 AC (After Covid)

:default_rofl:

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Ludwigia

I forgot about these little brachiopods. No prep to do on these. They just popped as is out of the matrix.

 

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Acanthothiris multispinosa

 

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Rhynchonelloidella alemanica

 

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Neat! Are brachiopods common in that formation? They dominate the faunas here in the Paleozoic but I know they tend to get rarer later. Whats that beneath the ammo?

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Ludwigia
4 hours ago, JimB88 said:

Neat! Are brachiopods common in that formation? They dominate the faunas here in the Paleozoic but I know they tend to get rarer later. Whats that beneath the ammo?

 

They appear in practically all Middle Jurassic Formations here, frequently in particular zones. Rhynchonelloid and Terebratulid are the common types. Good eyes. That's a somewhat weathered brachiopod under the ammonite.

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Ludwigia

So now I know what that mystery ammonite is called thanks to my colleague: Procerites tmetolobus from the zigzag zone, Bathonian.

 

I've finished the rest now. First the Teloceras sp. ø is 14cm. Even including the bit of "outer whorl", it's all just phragmocone, so this must have been a biggie, as a lot of this genus are.

 

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Two of the ammonites and all of the bivalves unfortunately weren't worth saving due to missing parts of the shells. So there was just this Ancolioceras opalinoides ammonite and what appears to be either a trace fossil or a piece of wood.

 

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Loved your pics of your trip up the creek, Roger! You must be a month ahead of us in Minnesota, but it amazed me how familiar so many of your wildflowers are to me! The "Dutchman's Breeches", as we call them here, are purple! Ours are white in color. Beautiful finds!!! You are so lucky to have the Jurassic so close to you!

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Ludwigia
5 minutes ago, Bev said:

Loved your pics of your trip up the creek, Roger! You must be a month ahead of us in Minnesota, but it amazed me how familiar so many of your wildflowers are to me! The "Dutchman's Breeches", as we call them here, are purple! Ours are white in color. Beautiful finds!!! You are so lucky to have the Jurassic so close to you!

Thanks Bev. I don't know what all those flowers are called, but they sure are pretty.

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Everhardus

Very nice Teloceras Roger, shame the Ancolioceras misses most of the shell but still nice....

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Ludwigia
13 hours ago, Everhardus said:

Very nice Teloceras Roger, shame the Ancolioceras misses most of the shell but still nice....

Thanks Marcel. The Teloceras also isn't perfect, but I'm happy to have finally found a relatively decent one. I also found out about the trace fossil. It's a feeding burrow made by Polychaetes called Palaeophycus striatus.

 

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