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13 hours ago, connorp said:

Here's a cool little denticle. It feels familiar, maybe acanthodian? I will have to go back through my literature when I have time.

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And then this super small thing. It superficially resembles a vertebra (to me at least), but I don't know.

IMG_8.jpg.17afb8f208960884dd08d90fdc2402da.jpgIMG_9.jpg.4fc60092d1383597419b4868c71e68bc.jpg

Denticle is chondrichthyan, vaguely "Petrodus" type, but I couldn't tell you the animal's actual genus.

 

Vertebra is probably haplolepid.

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I find small pieces of cancellous bone often. Never anything more than little unidentifiable bits though, and very fragile.

IMG_2.jpg.359b0404930f3f03cd60a6148c91c378.jpgIMG_3.jpg.1f1dce9bbbc953158ae13f0b82e14225.jpg

 

Object on the right looks like a heavily etched holocephalan toothplate. Maybe something like Ageleodus or Sibyrhynchus. Object on the left is hard to tell; the surface of the bone looks vaguely sarcopterygian...I wonder if this might even be a fragment of dermal bone.

 

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A tiny scale, I'm guessing palaeoniscoid based on the rhomboidal shape.

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Safe bet.

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deutscheben

Nice micro fish bits! As I am going through my black shale I find myself wishing for a “Guide to disarticulated fish parts of the Pennsylvanian”, I find so many interesting things and have very little idea what they are.

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  • 1 month later...
connorp

Kicking off the season with my best and most complete petalodont tooth yet. I'm labeling it as Peripristis for now but am open to other thoughts.

 

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  • 1 month later...
connorp

I had a really good hunt in the LaSalle Limestone last weekend. I still have a couple larger finds I'm finishing prep on, but I found a lot of smaller specimens that required little to no prep. All the specimens below are <1cm at the longest dimension. Haven't started trying to ID them, that will be a job for the winter unless anyone has any input.

 

A partial petalodont crown

S20210421_001.thumb.jpg.2f2cc9acfe0d32caea0e46ed94ed4732.jpg

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A partial fish scale. I would guess palaeoniscoid.

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Cladodont tooth

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This is a neat one. It looks similar to a specimen @deutscheben posted a while ago, which was ID'd as a possibly undescribed hybodontiform.

S20210421_006.thumb.jpg.68bdcd98e3d8f67564de0ab15334fa11.jpg

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  • 2 weeks later...
connorp

Here are two new holocephalan tooth plates I'm quite happy with. I love the coloring on them.

 

Cochliodus? sp. (not positive on the ID for this one, as usual)

IMG_0255.thumb.jpg.597c8b8f075edb1ebc9b439c7a226e0e.jpg

 

Deltodus sp.

IMG_0261.thumb.jpg.b6d3c092173f89cc3b8f64de01b65ef6.jpgIMG_0259.thumb.jpg.a7fa2b91b8118a7f246fc55f66890ec3.jpg

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bigred97

Beautiful! Really nice pictures, I love the detail on them.

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fossilsonwheels
On 4/21/2021 at 10:08 PM, connorp said:

I had a really good hunt in the LaSalle Limestone last weekend. I still have a couple larger finds I'm finishing prep on, but I found a lot of smaller specimens that required little to no prep. All the specimens below are <1cm at the longest dimension. Haven't started trying to ID them, that will be a job for the winter unless anyone has any input.

 

A partial petalodont crown

S20210421_001.thumb.jpg.2f2cc9acfe0d32caea0e46ed94ed4732.jpg

S20210421_002.thumb.jpg.0b858f64d5f863eedf773e6b3a6edca3.jpg

 

A partial fish scale. I would guess palaeoniscoid.

S20210421_005.thumb.jpg.fa88c7a0f6265adec15735ac7e58ed1a.jpg

 

Cladodont tooth

S20210422_001.thumb.jpg.c8130b09eed7d35c2a3ee2cc625f366e.jpg

 

This is a neat one. It looks similar to a specimen @deutscheben posted a while ago, which was ID'd as a possibly undescribed hybodontiform.

S20210421_006.thumb.jpg.68bdcd98e3d8f67564de0ab15334fa11.jpg

Fantastic finds Connor. The Cladodont and that Hybodontiform are really great. 

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connorp

Posting my Peripristis here for posterity.

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This was the last find to clean up from my trips so far this year. A perfect little cladodont tooth, and I think my best so far. Barely measures 5mm.

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deutscheben

You’ve found a really great batch this year, that Peripristis is next level! Congrats on some awesome finds.

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connorp
17 minutes ago, deutscheben said:

You’ve found a really great batch this year, that Peripristis is next level! Congrats on some awesome finds.

Thanks! The rocks that came down this winter have been very productive.

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