Trilobites for identification

[minnbuckeye]

Here are a few trilobites, damaged and  partials that were found this summer. After cleaning these up over the last few days, I still am unsure of their identities. The first one I will venture is an Isotelus roller. Rollers always confuse me! It is from the Maquoketa/Ordovician and Isotelus are common. @Kane, @piranha

 

 

 

3. is also from the Maquoketa/Ordovician. Maybe not enough present to tell.

 

 

The rest are from the Platteville/ Ordovician.

 

4. Popped out of the matrix during prep. It measures 2.5cm by 2.0cm. I count 9 thoracic segments.

 

 

This is the back side showing a probable pygidium. Interestingly, the depression in front of the pygidium has a positive to it (saved) which makes me wonder whether it could be a hypostome. I will research further once I can identify the species, or at least genus.

 

 

2. Is a smaller trilobite, 2cm by 1.5cm and contains 8 visible thoracic segments, though the  end is not complete.

 

 

5. This specimen is the real reason that the post was created. It has me completely stumped. Unfortunately a piece is missing. I did not see this in the rock until I began processing a different fossil. Hence the other piece is back at the roadcut that this was found at. Anyways, I suspect but not convinced it is a trilobite. The green dots in the first picture show the fractured area. The dark fuzzy area delineated by the red dots  is perpendicular to the fractured face. It was hidden in rock until the Dremel exposed it, The exposed surface is very rough compared to other trilobites I have found. Because of this I was hoping to have a better understanding of what is within this rock before prepping further.

 

 

 

 

Here is what I envision as a possibility

 

 

 

 

Thanks for taking a look!

 

Edited January 3, 2023 by minnbuckeye

[Top Trilo]

Not sure on the identity but nice trilobites Mike!

[connorp]

First is Anataphrus vigilans, fourth is Bumastoides milleri.

[minnbuckeye]

@connorp, Thanks for taking a look. 

 

As for #1, I had found a Anataphrus vigilans on the same trip, shown below.

 

 

 

Here is a comparison of the Anataphrus next to my questionable specimen. Does the species get this large? And the color is so different from other Anataphrus found at this site. 

 

 

 

[connorp]

1 hour ago, minnbuckeye said:

@connorp, Thanks for taking a look. 

 

As for #1, I had found a Anataphrus vigilans on the same trip, shown below.

 

 

 

Here is a comparison of the Anataphrus next to my questionable specimen. Does the species get this large? And the color is so different from other Anataphrus found at this site. 

 

 

 

I’ve got a 2” prone.

[minnbuckeye]

Thanks!! Couldn't find a size range.

[minnbuckeye]

Prepped out a few more trilo bits last night.

 

Would this be a Calyptaux plattevillensis pygidium from the Platteville?

 

 

Gabricerurus? If so, is it worth hiring someone to prep this? 

 

 

I am sneaking this one in. Just cleaned it up a little last night. It is actually from Oldenburg, Indiana. 

 

 

 

 

[minnbuckeye]

 @connorp, @Kane, @piranha     

 

  Yesterday, forum member @fossilnut was bold enough to talk on the fragility of life. His post inspired me to come forward and admit some health issues that have become the norm in my life. Almost 3 years ago, while fossil hunting, I became  unaware of my surroundings, didn't know how I got there, total lack of memory of the whole day. Medical workup revealed little. A few days later, I returned to "normal". Since that incident, bouts of forgetfulness and outright amnesia have continued to  occur.

         I mention this as a way to explain my post "Trilobites for identification" and its duplicated content from previous posts. The items posted were in fact previously presented for ID. It wasn't until Connor provided identification of a trilobite that I began to think something is funny here. Something seemed too familiar. Turns out after rereading many of my posts, I found  evidence that I had truly posted many of these before. Yet my mind, even as I write this, tells me I collected the specimens this summer and had not asked for help yet. It is problems like this that I continue to have on an occasional basis. Please accept my apology for re-requesting IDs. You have all been very helpful in the past and are truly appreciated! And thanks, fossilnut, for giving me the courage to admit what I had done. It bothered me tremendously once I discovered it.

[Fossildude19]

Mike,

I'm sorry to hear about your recent challenges. I hope you get some answers soon.

Best wishes,

Tim

 

 

[piranha]

Speaking from experience, it's easy to be forgetful if you have a ton of info crammed on your hard drive.

 

Please don't be too hard on yourself, Mike!

 

[fossilnut]

Hi Mike Sorry to hear of your medical issue and I hope you will receive some help. My wife was finally diagnosed with an incurable, untreatable illness PSP-3 words I HATE Progressive Supranuclear Palsy. She was unable to do things around the house and I was unable to help etc. So Assisted Living would provide for her care if/when I was unable. No one really wants to hear all this so let me just move on to wish you continued good hunting and enjoy the experiences making sure you have a backup in "case".

I hope I have a few years of talking to folks and displaying fossils etc.

You were very brave to let everyone know your situation.

 

I wnt to thank you for your donations to NHSM, Loved the cephalopods and the story of their inplosions in a mass death event so intriguing. The extremely large fossil cephalopod-I am trying to get someone to create a "living" example using the fossil that would grab a visitors attention. Thanks so very much. These are all in NHSM's hands.

 

Wishing you all the best. Tom

[minnbuckeye]

@fossilnut, if I post anything that could be used by the NHSM, just message me. Most of my discoveries I prefer to give to those admiring my finds. As for your cephalopod idea, here are a few pictures of displays made for a local park. Maybe they can provide some ideas for you.