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Tarrant County 11-21-20


flyingpenut

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Here are some pictures of my latest fossil hunting trip. I have been going to post oak creek a lot for shark teeth and wanted to try something new out. I found a steep embankment on a river in Tarrant county with several partial ammonites sticking out. After climbing down the embankment I found an assortment of fossils. I am not sure of the period or the formation in Tarrant county but there was quite a variety. Picture 2 is a conglomeration of marine fossils. Picture 3 is a nice ammonite I went back and chiseled away later. I will post that picture later but it was a very nice enact one. Pictures 4 and 5 are of a nice ammonite that unfortunately broke as I was removing it from the matrix but I was able to piece it back together. It was also interesting to see the internal structure of it as well. The rest are just closeups of common fossils except for the last 4 pictures 13-16 I have no idea what they are. Any ideas? 

 

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Good stuff!  My favorite place to fossil hunt is in Tarrant county by my folks' place.  It's just non-stop in the marl.  Those are some really great echinoids!

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4 looks like a Dipoloceras cristatum ammonite, rather rare.  It is a cosmopolitan biostrat marker. Great find.

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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16 hours ago, Tidgy's Dad said:

Nice finds.

Gotta love those little echinoids.:)

Thanks. Those are my favorite. I have heard you can find one variety at the North Sulphur River but have never had any luck. Then I find all these in about 5 minutes haha. 

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15 hours ago, Planko said:

Wow! What a nice haul. 

Thanks. It is a little different fossil hunting than what im used to. I found all of this in less than 15 minutes where im used to spending all day and finding just a few fossils. 

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13 hours ago, NWARockhound said:

Good stuff!  My favorite place to fossil hunt is in Tarrant county by my folks' place.  It's just non-stop in the marl.  Those are some really great echinoids!

Thanks. It is amazing how fossiliferous this marl is.  

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3 hours ago, Uncle Siphuncle said:

4 looks like a Dipoloceras cristatum ammonite, rather rare.  It is a cosmopolitan biostrat marker. Great find.

Thanks for the ID. It was different than any other ammonite I have found and was interested to know what it was. 

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You may already know this, but picture 13 is a partial cross section of a coral - Parasimila sp. if I remember correctly. I've found many specimens that look almost identical in the Comanche Peak formation down here in central Texas. However, after looking at a geologic map of Tarrant County it doesn't seem like there's any of that formation exposed - mostly just Goodland, Woodbine, Kiamchi, etc. so I'm not entirely sure which of those formations you were actually hunting in. Next time you go back to that location you can pull up the Pocket Texas Geology map that the USGS offers on your phone to find out exactly what you're dealing with, but I suspect it's one of those three I already mentioned. Here's the link: https://txpub.usgs.gov/txgeology/

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I think he’s hunting Goodland, and the echs are Pliotoxaster whitei.

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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14 hours ago, GPayton said:

You may already know this, but picture 13 is a partial cross section of a coral - Parasimila sp. if I remember correctly. I've found many specimens that look almost identical in the Comanche Peak formation down here in central Texas. However, after looking at a geologic map of Tarrant County it doesn't seem like there's any of that formation exposed - mostly just Goodland, Woodbine, Kiamchi, etc. so I'm not entirely sure which of those formations you were actually hunting in. Next time you go back to that location you can pull up the Pocket Texas Geology map that the USGS offers on your phone to find out exactly what you're dealing with, but I suspect it's one of those three I already mentioned. Here's the link: https://txpub.usgs.gov/txgeology/

Great. Thank you for the link. I will pull it up next time I am there. 

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