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Cotton Formation Fauna

izak_

By izak_
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izak_ Regular Member

izak_

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A few things from the Silurian (Llandovery) Cotton Formation near Forbes, NSW Australia. Most of these specimens are currently undescribed, but a paper will be released on them soon. One of my strophomenid brachiopods from the site will be in the paper, so I'll post it when it comes out, since they're a pain to photograph. :wacko: 

 

The rare Aulacopleura pogsoni

5bad790fcb748_ScreenShot2018-09-27at3_10_23pm.png.d2701d0363a9ae2c0ed944f68095f184.png

 

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izak_ Regular Member

izak_

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My only other decent A. pogsoni 

5bad796f8ec57_ScreenShot2018-09-28at10_44_11am.png.f424ecf85c3553a28faa7a94332d6b43.png

 

The smallest Sinespinaspis (Odontopleura) markhami I've ever seen (aprox. 4mm wide). I'll post some bigger and better preserved ones later. 

5bad7996cb88c_ScreenShot2018-09-27at4_23_34pm.png.64317f33adcf43d54837885158591a2e.png5bad79c551229_ScreenShot2018-09-27at4_23_23pm.png.178a231b5774b46370625d222056f381.png

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izak_ Regular Member

izak_

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A currently undescribed platyceratid gastropod. They're not that rare, but this is the best one I have... 

5bad7a389456c_ScreenShot2018-09-27at3_48_52pm.png.cdcda68116311ac9013182bade3a7b23.png

 

Undescribed crinoid. Only one I've ever seen or heard of from the site. I might also have a calyx of some kind of echinoderm, but not too sure. 

5bad7a6f00650_ScreenShot2018-09-27at3_51_27pm.png.2717682c0f104c43c2b453529d8baabc.png

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izak_ Regular Member

izak_

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Some undescribed straight nautiloids. All were found on the same trip, and also the only ones I've ever seen or heard of from the site.

5bad7b3d0af47_ScreenShot2018-09-28at10_51_49am.png.d22c655360c691d9b53707e3b39e2156.png

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izak_ Regular Member

izak_

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This one shows the chambers well.

5bad7b67bffc4_ScreenShot2018-09-28at10_52_39am.png.41feac2699ee41e4802ab6abfb7e1a7b.png

 

 

And a cross section of a chamber. Note the siphuncle in the centre. 

5bad7b7d8de8d_ScreenShot2018-09-27at3_46_10pm.png.568fd089a52e6357a7d91741d0252808.png

 

More to come eventually...

 

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Fossildude19 Regular Member

Fossildude19

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Wow!  :wub: 

Very nice specimens!

Thank you for showing us. 

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."
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Tidgy's Dad Regular Member

Tidgy's Dad

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Tremendous, and seemingly important finds! :)

The trilobites are beautiful and the orthoconic nautiloids very exciting.. 

Any chance of some piccies of the brachiopod (s) ? 

Please.

 

Life's Good!

Tortoise Friend.

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