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Plantguy

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Hi Gang, looking for some insight on several Tamiami formation Pliocene aged Sarasota County, Florida inverts. 

 

Found this gastropod at work a couple weeks ago as the rains exposed some new material in the road fill. Trying to confirm if its a Phyllonotus globosus. It also had a neat little Chama inside...saving it for my Chama ID project that I may get to some day....

5c28c48d92048_Phyllonotosnumbered.thumb.jpg.5b8bc9b0bcba16ba0aa8293fce002703.jpg

5c28c4bc7e30d_Phyllonotusandsmallchamanumbered.thumb.jpg.8e5af130d5dc5110e655f2abd3fece05.jpg
 

 

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Having mentioned Phyllonotus I was wondering if this other one I have from old APAC mine spoils is an immature P. globosus or possible something else maybe P. pomum?  I remember picking it up years ago and wondering initially if it was a Chicoreus but then I cleaned it up and looked at the aperature and set it aside. Here's a comparative view of a Chicoreus on the right specimen #4 compared to the other 2 showing some differences.

5c28c6c4828e4_Phyllonotus3numbered.thumb.jpg.0fcba824e057fe047bbe3bbfd2ae4eff.jpg

5c28c6e3147b7_Phyllonotuscomparison.jpg.e53e7f79e2256c8c392cdb9583e5b24e.jpg

 

Lastly here's a little clam again from APAC mine spoils years ago that I was hoping it was a Bed 11 find...it was mixed up with a number of Chama and Ostrea and Septastrea fragments which were all indicative of Bed 11- the oldest from APAC...since it from spoils it could have been from any of the beds there though. Its pretty beat up and thought it might be a Varicorbula but am not sure at all. 

5c28c7b05c6b6_Unknowna1.jpg.1a0994514ba1f10752fb108093fbe1d2.jpg5c28c7af985af_Unknowna.jpg.6b22c00d068b29f9fee18e785948c121.jpg5c28c7b10cda9_Unknowna2.jpg.140387a721e2b97d36e69f81bf80d9bd.jpg5c28c7b1c7ccc_Unknowna3.jpg.1de73cbc0fa2fdb216891bd005b2075a.jpg5c28c7b29b38f_Unknowna.jpg.fd944f2ad2eb34fb8eec068aa350bacb.jpg

Thanks for the help. Happy New Year to you all!

Regards, Chris 

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Hi Chris and Jack

 

All of the Phyllonotus are P. globosusP. pomum is the recent species which first began showing up in the lower Pleistocene.  Both P. pomum and P. globosus overlap in the Caloosahatchee, but P. globosus is now extinct.  It can be hard telling both apart but I can supply descriptions if needed.  The Chicoreus is C. floridanusChama species can sometimes be hard to identify particularly the upper valve, however based upon the direction of the bend in the beak and its "Leafiness" I think it is Chama wilcoxii.  The bivalve is not Varicorbula but Anomalocardia caloosana which was very abundant in Bed 4 at APAC.

 

Mike

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23 minutes ago, MikeR said:

Hi Chris and Jack

 

All of the Phyllonotus are P. globosusP. pomum is the recent species which first began showing up in the lower Pleistocene.  Both P. pomum and P. globosus overlap in the Caloosahatchee, but P. globosus is now extinct.  It can be hard telling both apart but I can supply descriptions if needed.  The Chicoreus is C. floridanusChama species can sometimes be hard to identify particularly the upper valve, however based upon the direction of the bend in the beak and its "Leafiness" I think it is Chama wilcoxii.  The bivalve is not Varicorbula but Anomalocardia caloosana which was very abundant in Bed 4 at APAC.

 

Mike

Thanks a bunch Mike....dang I had Anomalocardia photos and just couldnt get a sense of what the hinge was doing in comparison to mine..Here's more of the P.globosus I have with the  immature beat up/slightly disfigured form on the right...it just looks different in the arrangement of the ribs/ridges.

IMG_20181219_214106.thumb.jpg.ad561cc230433e76644c267e457db860.jpg

Thanks again...I'll bug you again in the New Year when I get my Chama photos together...

 

Regards, Chris 

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