Another 5 Mazon Creek specimens for ID.

[Mark Kmiecik]

Calling on the usual members, again, to either confirm or refute my attempt at ID on these five Mazon Creek specimens. Thanks in advance.  @bigred97 @connorp @deutscheben @fiddlehead @flipper559 @Nimravis @Plantguy @RCFossils @Runner64 @stats @TheRocksWillShoutHisGlory

 

  

 

  

 

[Runner64]

Unsure on specific IDs for plants, bad at these.  As to your last unknown, I don't see any defining features.  I am thinking it is an Essexella.

[Mark Kmiecik]

3 hours ago, Runner64 said:

Unsure on specific IDs for plants, bad at these.  As to your last unknown, I don't see any defining features.  I am thinking it is an Essexella.

 

Thanks for chiming in. That last one is quite three-dimensional. That's a fairly deep hollow in the upper half.

[stats]

The plants look pretty good, although it's hard to see the first Mariopteris. I like them because the pinnules look more ornate than others.

 

Cheers,

Rich

 

[Plantguy]

Hey Mark, I was staring at Jack's new book a bit and now see there are 7 species of Annularia listed. I can see why you say radiata.  Man that guy you have is just a tad over 1 cm so I'm wondering if it might not be a mature leaf form and might actually be something more like inflata or latifolia.  seems to have only 12 or so leaves unfortunately but with a wide midvein. Do the leaves have mucro's--sharp points? He mentions them in the inflata description. 

I think I should probably defer to the other members on a species level ID for this one. Nice/interesting find!

The other specimens that lack the preservation/veination I'm uncertain on as well. 

 

Regards, Chris 

[Mark Kmiecik]

15 hours ago, Plantguy said:

Hey Mark, I was staring at Jack's new book a bit and now see there are 7 species of Annularia listed. I can see why you say radiata.  Man that guy you have is just a tad over 1 cm so I'm wondering if it might not be a mature leaf form and might actually be something more like inflata or latifolia.  seems to have only 12 or so leaves unfortunately but with a wide midvein. Do the leaves have mucro's--sharp points? He mentions them in the inflata description. 

I think I should probably defer to the other members on a species level ID for this one. Nice/interesting find!

The other specimens that lack the preservation/veination I'm uncertain on as well. 

 

Regards, Chris 

 

None of the leaf tips are clearly visible and I also was undecided among three species of Annularia, therefore the question mark as well as the question marks on the other plants also. All of these specimens are from 1 to 2 centimeters, including the unknown which has at least 1/2 centimeter in thickness as well. I was hoping you or one of the other MC collectors would say "Oh yeah, that's definitely a . . . .", but I guess that's not about to happen. 

 

Thanks for taking a look.