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Helderberg Group Fossils


historianmichael

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historianmichael

A few years ago I collected with the NYPS at a quarry exposing some Helderberg Group limestone. I failed to label some of my finds. I have a best guess on the trilobites but I was hoping to get some confirmation. I have struggled identifying a few of the brachiopods and a bryozoan and I could use some help with those. Any help is greatly appreciated.

 

#1 - some type of bryozoan but I am not sure which one

5f1f35105e6c4_ScreenShot2020-07-27at4_06_33PM.png.6f4eb623f45da8ac177d355a25a57f51.png   IMG_8329.JPG.083bfe2baccfcf73d72590284ae87ab2.JPG

 

 

#2- ???

5f1f3512c73ae_ScreenShot2020-07-27at4_07_39PM.png.3167f5d67aae359ac27cc0fe752fb2e3.png

 

 

#3- ???

5f1f3510bc875_ScreenShot2020-07-27at4_06_42PM.png.24fe1c3d2e9f36b571bb4b4ca46a6314.png   5f1f35112a2f6_ScreenShot2020-07-27at4_07_04PM.png.0a233c62c47220a654710deec432eeb7.png   5f1f351192e82_ScreenShot2020-07-27at4_07_12PM.png.0d2fae201659e97efedf38e0c84ec9ab.png

 

 

#4- Paciphacops logani?

 5f1f3513393b4_ScreenShot2020-07-27at4_07_48PM.png.de6086f6fda38f65dbf7c61aa681c6f8.png

 

 

#5- Odontocephalus sp.?

5f1f35125dd91_ScreenShot2020-07-27at4_07_31PM.png.46ae58642987f3edf99bc329331fc3ad.png

 

 

#6- Dalmanites pleuroptyx?

5f1f35120152a_ScreenShot2020-07-27at4_07_22PM.png.0b391ce41c68450c502429e6234571d0.png

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Pretty sure the first one is a brachiopod. 

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First brachiopod looks like a flattened Leptaena rhomboidalis. The second I'm not sure about due to lack of identifying features, but probably an Orthid or Strophomenid. The third looks like Meristella. Can't help you with the trilobites except the one does not look like Odontocephalus. 

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historianmichael

Thank you both for your initial thoughts. Hopefully these additional photos are helpful. Perhaps @Tidgy's Dad or @Peat Burns have some thoughts on the brachiopods and @piranha knows what these trilobites are. Could #5 actually be Synphoria stemmata?

 

#1- I am still convinced that this is a bryozoan that has been broken, exposing the internal structure. I can certainly be convinced otherwise

IMG_2487.thumb.JPG.bf6befa8ef9903600922808cb28eb38c.JPG   IMG_3226.thumb.JPG.af576c2bbf9ca07fc90df9678d9ae5a0.JPG

 

 

#2- ???

IMG_6895.thumb.JPG.4926aead03d8a15de037ceaa56fb0020.JPG

 

 

#3- ???

IMG_0598.thumb.JPG.44e0afc4e957c3d39f845a83840790b7.JPG  IMG_9466.thumb.JPG.a601184d314d632c14f0b7fc00f4db50.JPG  IMG_7430.thumb.JPG.5b8a9a9f949697a4e00656bdf30b2993.JPG

 

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4 hours ago, historianmichael said:

#1- I am still convinced that this is a bryozoan that has been broken, exposing the internal structure. I can certainly be convinced otherwise

The internal structure of which form of bryozoan ? I see problems any way you go with that.

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Tidgy's Dad

A strophomenid brachiopod and an internal mold of an atrypid or orthid., I think. 

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