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Dallas County creek - July 27th


BudB

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I made a trip to a creek in Dallas County yesterday morning. This is an Eagle Ford outcrop. I had visited this creek once before in 2020. I only found a couple of things, but one was an ammonite I was really impressed with. I had found it in the edge of the water, and wondered if this might be a better site to hunt under low water conditions. With the drought we're having right now, those low water conditions are here, so it seemed like a good time to revisit the spot. It's not a large outcrop, so I didn't worry about getting there too early. I just hunted a couple of hours, then headed home before the worst heat of the day.

 

 

The fossils aren't hard to spot in today's in situ photos.

 

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Here is what I brought home, minus one small ammonite that was soaking to aid in matrix removal.

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This ammonite with the smooth outside looks a lot like the big ammonite I found here on my first visit. I was guessing that one to be a placenticeras cumminsi.

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These two pieces almost look like they could have come from the same ammonite. Both would have been pretty large if complete.

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These two had very different ridges than the others. I haven't had time to try and identify them yet.

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I'm still working on removing the matrix from this small one.  One of the things I really like about the ammonites from this site is that they all seem to have lots of shell left. So many ammonites I find elsewhere are just rock, with no shell left at all. And to think there are this many ammonites to be found at a small site in the middle of DFW, within the Dallas city limits. You just never know until you look.

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This piece has lots of shell too. An oyster? Does anyone recognize that pattern on the shell?

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And then there's this. It looks like it was just a round hollow tube shaped thin shell before the matrix distorted it. Does anyone recognize it? A crustacean leg, maybe? Here are photos of both sides, plus an end view of it.

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Edited by BudB
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32 minutes ago, BudB said:

And then there's this. It looks like it was just a round hollow tube shaped thin shell before the matrix distorted it. Does anyone recognize it? A crustacean leg, maybe? Here are photos of both sides, plus an end view of it.


Looks like Baculites.

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3 minutes ago, Al Dente said:


Looks like Baculites.

That was my first thought. But I've never seen a baculite that was just completely hollow. It looks like if a shell that thin on the outside survived, there would be evidence of chambers left in the matrix on the inside.

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Baculites living chamber I think.  That would account for the lack of chambers.

 

Don

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The geology and characteristics suggest a Sciponoceras species.

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The human mind has the ability to believe anything is true.  -  JJ

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9 hours ago, FossilDAWG said:

Baculites living chamber I think.  That would account for the lack of chambers.

 

Don

Could be. It's such a small piece. Even when I'm just finding bigger stuff, I still like to spend some time on kneepads and elbows, checking for smaller fossils. But some of those small ones can be tough to ID.

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I didn't scroll to the top of the thread to catch the geology and the other fauna.  I agree completely with JohnJ.  I will say that Sciponoceras is a baculitid, so "Baculites living chamber" wasn't far off the mark.

 

Don

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19 hours ago, Al Dente said:


Looks like Baculites.

Sciponoceras gracile

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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1 hour ago, Uncle Siphuncle said:

Sciponoceras gracile

Indeed. That matches both the look of it and the formation it came from.

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