More Cretaceous Finds From S.d.

[old bones]

I am still working my way thru the Cretaceous (Turonian age) matrix from Grant Co, S.D. sent to me by tj102569 back in December of 2013.

It takes a long while to break down and I have found so many fossils that it is going to take even longer to photograph and catalog them all. So, I will just post a selection for now of some species. One of my favorite shark teeth to find is the Ptychodus. Here are a few of the complete specimens that I have recently found. If any IDs are incorrect, please feel free to tell my the correct one. I am here to learn.

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[old bones]

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This one is stuck in either bone or matrix.

[old bones]

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With my new computer I am able to use our USB microscope to photograph the tiny stuff. The resolution is quite low, but it gets closer than I can with my camera.

Here is an assortment of very small specimens.

This shark tooth, (Squalicorax ?) is golden with, I presume pyrite. The photo doesn't do justice to the actual colour that it is.

I don't know what this tiny barbed object is...

I wish I knew what these are. I find dozens of them in this matrix. These are Endochodus teeth. Thanks to Ramo for the ID.

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Edited August 4, 2014 by old bones

[Foshunter]

Nice Cretaceous finds, thanks for sharing----Tom

[old bones]

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Some fish teeth... I will focus more on them in another report. There are so many kinds and sizes.

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[old bones]

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I have found 5 or 6 of these teeth, all about the same size. Can anyone tell me if they are croc teeth or something else...

Then there are some small shark teeth some of which I know the names of. If anyone would like to help me out on the unlabeled ones, I would appreciate it.

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[old bones]

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Squalicorax (falcatus or curvatus ?)

Johnlongia parvidens (thanks to siteseer)

unknown:

thanks for looking

Edited August 2, 2014 by old bones

[siteseer]

Yes, some of the teeth from that deposit are at least partly pyritized. I have a couple of teeth like yours - interesting preservation not often seen in shark teeth.

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With my new computer I am able to use our USB microscope to photograph the tiny stuff. The resolution is quite low, but it gets closer than I can with my camera.

Here is an assortment of very small specimens.

This shark tooth, (Squalicorax ?) is golden with, I presume pyrite. The photo doesn't do justice to the actual colour that it is.

SC gold tooth.jpg

I don't know what this tiny barbed object is...

SD barbed.jpg

I wish I knew what these are. I find dozens of them in this matrix.

SD boney teeth.jpg

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[jcbshark]

Great pics and finds as usual Julianna! Those suspected croc teeth look like the ones I find here too but wait for someone more familiar with that material before you take my word for it. Thanks for sharing!

[siteseer]

Your unknown is also Johnlongia parvidens (exaggerated lingual protuberance with short root lobes).

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Squalicorax (falcatus or curvatus ?)

SD Squalicorax 4.jpg SD Squalicorax 5.jpg

unknown:

SD sharktooth 1.jpg SD sktooth3.jpg

SD tiny sktooth.jpg

thanks for looking

[old bones]

Great pics and finds as usual Julianna! Those suspected croc teeth look like the ones I find here too but wait for someone more familiar with that material before you take my word for it. Thanks for sharing!

Thanks Jeff, I sure hope they are croc

[old bones]

Your unknown is also Johnlongia parvidens (exaggerated lingual protuberance with short root lobes).

Thank you so much siteseer. You helped me months ago to ID my first one and I had a suspicion that these were also Johnlongia parvidens.

[old bones]

Nice Cretaceous finds, thanks for sharing----Tom

Thanks for checking this out Tom

[Ancient Bones]

Good finds and another nice display old bones.

[old bones]

Good finds and another nice display old bones.

Thanks Ancient Bones

[fossilized6s]

Awesome finds!! I've been trying to get my hands on some of that SD matrix for some time now....

I love those Ptychodus teeth! The Cretaceous shark teeth always amaze me.

[old bones]

Awesome finds!! I've been trying to get my hands on some of that SD matrix for some time now....

I love those Ptychodus teeth! The Cretaceous shark teeth always amaze me.

Thanks Charlie. The Cretaceous teeth are very neat...so primitive looking. The Ptychodus are especially so.

see PM

[Ramo]

The "wish I knew what these are I fond dozens" are enchodus teeth. Nice finds.

Ramo

[PFOOLEY]

Very nice photos...love what you are finding! Ptychodus are amongst my favorites.

[old bones]

The "wish I knew what these are I fond dozens" are enchodus teeth. Nice finds.

Ramo

Thanks Ramo. That's what I was hoping. Now I can label them correctly.

[old bones]

Very nice photos...love what you are finding! Ptychodus are amongst my favorites.

Thank you PFOOLEY!

[Shamalama]

Wow, you have sure found quite a bit. Are you dissolving the matrix to find all these teeth?

[old bones]

Wow, you have sure found quite a bit. Are you dissolving the matrix to find all these teeth?

Thanks Dave. I am using the boiling water, drain and freeze and repeat method to break down the concrete-like chunks of this matrix. I had tried the vinegar method, but wasn't too impressed with the results. The water seems to work best. It does require patience tho...some of the chunks can take several weeks to get soft enough to crumble. I use a dental pick and needle nose pliers to coax the really tough bits apart. It's worth the trouble tho, as when the lumps do break apart, the teeth fall out beautifully. I have many more finds to post as soon as I can get them photographed. I am trying get my IDs straight on the shark teeth before I put them up.

Julianna